{"projection_revision":2,"snapshot":"652b209e8a4c0fc1ece71e35299ddeda","catalog_version":22556,"snapshot_created_at":"2026-09-30T18:38:17+00:00","snapshot_expires_at":"2026-10-01T18:38:17+00:00","source_changed_at":"2026-09-30T18:33:14+00:00","freshness_behavior":"materialized on first request after a committed source change; database triggers cover row writes and relationship writes","source_id_sha256":"bd560689c31ffbc39f07e91b59c0f3209111e83c8f8f7c7961ed12b50477f852","source_content_sha256":"8ef34e7e97559494dcbfdfeb20bf6e77199a1520f7f34341d3035daea7353d95","total_catalog_pieces":6404,"schema_version":"2.0","query":"","normalized_query":"","resolved_filters":{"composer_id":2,"timezone":"UTC"},"sort":"relevance","projection":"compact","total_matches":985,"returned":50,"page":6,"per_page":50,"total_pages":20,"previous_page_url":"https://roadtovirtuosity.com/ai/catalog.json?composer_id=2&page=5&snapshot=652b209e8a4c0fc1ece71e35299ddeda","next_page_url":"https://roadtovirtuosity.com/ai/catalog.json?composer_id=2&page=7&snapshot=652b209e8a4c0fc1ece71e35299ddeda","end_of_results":false,"alternate_formats":{"html":"https://roadtovirtuosity.com/ai/catalog?composer_id=2&page=6&snapshot=652b209e8a4c0fc1ece71e35299ddeda","json":"https://roadtovirtuosity.com/ai/catalog.json?composer_id=2&page=6&snapshot=652b209e8a4c0fc1ece71e35299ddeda","text":"https://roadtovirtuosity.com/ai/catalog.txt?composer_id=2&page=6&snapshot=652b209e8a4c0fc1ece71e35299ddeda"},"warnings":["Strict taxonomy filters exclude unattributed records; search title text separately before deciding something is missing.","Work identity, musical sequence and completeness are unknown unless reviewed metadata is supplied. Catalog collections are existing subcategory groupings.","Historical first-publication dates are unknown. Date counts include only currently public entries with known first-publication dates.","File availability reports a public file reference, not a storage-health check.","A newer source revision exists. This response preserves the requested/captured snapshot; restart without snapshot for the latest available catalog."],"publication_count_scope":"currently public entries first published during the requested interval","unknown_publication_dates_before_date_filter":801,"distinct_work_count":null,"approximate_suggestions":[],"message":null,"pieces":[{"piece_id":3162,"title":"Czerny - 24 Five-Finger Exercises - Op. 777, No. 3","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Classical","genre_id":1,"is_archive_only":false,"evaluation_eligible":true,"points":312,"level":2,"canonical_url":"https://roadtovirtuosity.com/czerny-op-777-no-3","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":312}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Non-Commercial","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2024-07-04T01:13:25+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-12T01:52:49+00:00","match_basis":"filters"},{"piece_id":4209,"title":"Czerny - 24 Five-Finger Exercises - Op. 777, No. 4","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Classical","genre_id":1,"is_archive_only":false,"evaluation_eligible":true,"points":2657,"level":4,"canonical_url":"https://roadtovirtuosity.com/czerny-24-five-finger-exercises-op-777-no-4","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":2657}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Non-Commercial","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-11T05:03:50+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-12T01:16:41+00:00","match_basis":"filters"},{"piece_id":4210,"title":"Czerny - 24 Five-Finger Exercises - Op. 777, No. 5","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Classical","genre_id":1,"is_archive_only":false,"evaluation_eligible":true,"points":773,"level":2,"canonical_url":"https://roadtovirtuosity.com/czerny-24-five-finger-exercises-op-777-no-5","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":773}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Non-Commercial","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-11T05:11:46+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-12T19:54:14+00:00","match_basis":"filters"},{"piece_id":4211,"title":"Czerny - 24 Five-Finger Exercises - Op. 777, No. 6","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Classical","genre_id":1,"is_archive_only":false,"evaluation_eligible":true,"points":838,"level":2,"canonical_url":"https://roadtovirtuosity.com/czerny-24-five-finger-exercises-op-777-no-6","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":838}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Non-Commercial","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-11T05:12:33+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-14T06:47:15+00:00","match_basis":"filters"},{"piece_id":4212,"title":"Czerny - 24 Five-Finger Exercises - Op. 777, No. 7","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Classical","genre_id":1,"is_archive_only":false,"evaluation_eligible":true,"points":1044,"level":3,"canonical_url":"https://roadtovirtuosity.com/czerny-24-five-finger-exercises-op-777-no-7","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":1044}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Non-Commercial","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-11T05:13:21+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-14T06:49:59+00:00","match_basis":"filters"},{"piece_id":4213,"title":"Czerny - 24 Five-Finger Exercises - Op. 777, No. 8","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Classical","genre_id":1,"is_archive_only":false,"evaluation_eligible":true,"points":327,"level":2,"canonical_url":"https://roadtovirtuosity.com/czerny-24-five-finger-exercises-op-777-no-8","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":327}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Non-Commercial","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-11T05:13:48+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-14T06:52:50+00:00","match_basis":"filters"},{"piece_id":4214,"title":"Czerny - 24 Five-Finger Exercises - Op. 777, No. 9","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Classical","genre_id":1,"is_archive_only":false,"evaluation_eligible":true,"points":1388,"level":3,"canonical_url":"https://roadtovirtuosity.com/czerny-24-five-finger-exercises-op-777-no-9","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":1388}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Non-Commercial","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-11T05:14:10+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-14T06:54:30+00:00","match_basis":"filters"},{"piece_id":4846,"title":"Czerny - 24 Studies for the Left Hand - Op. 718, No. 1","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":60210,"level":7,"canonical_url":"https://roadtovirtuosity.com/czerny-24-studies-for-the-left-hand-op-718-no-1","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":60210}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-15T10:53:50+00:00","first_published_at":"2026-09-15T10:53:50+00:00","published_at":"2026-09-15T10:53:50+00:00","updated_at":"2026-09-15T10:53:58+00:00","match_basis":"filters"},{"piece_id":4855,"title":"Czerny - 24 Studies for the Left Hand - Op. 718, No. 10","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":59222,"level":7,"canonical_url":"https://roadtovirtuosity.com/czerny-24-studies-for-the-left-hand-op-718-no-10","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":59222}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-15T11:04:19+00:00","first_published_at":"2026-09-15T11:04:19+00:00","published_at":"2026-09-15T11:04:19+00:00","updated_at":"2026-09-15T11:04:28+00:00","match_basis":"filters"},{"piece_id":4856,"title":"Czerny - 24 Studies for the Left Hand - Op. 718, No. 11","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":10486,"level":5,"canonical_url":"https://roadtovirtuosity.com/czerny-24-studies-for-the-left-hand-op-718-no-11","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":10486}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-15T11:05:04+00:00","first_published_at":"2026-09-15T11:05:04+00:00","published_at":"2026-09-15T11:05:04+00:00","updated_at":"2026-09-15T11:05:17+00:00","match_basis":"filters"},{"piece_id":4857,"title":"Czerny - 24 Studies for the Left Hand - Op. 718, No. 12","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":6994,"level":5,"canonical_url":"https://roadtovirtuosity.com/czerny-24-studies-for-the-left-hand-op-718-no-12","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":6994}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-15T11:05:22+00:00","first_published_at":"2026-09-15T11:05:22+00:00","published_at":"2026-09-15T11:05:22+00:00","updated_at":"2026-09-15T11:05:29+00:00","match_basis":"filters"},{"piece_id":4858,"title":"Czerny - 24 Studies for the Left Hand - Op. 718, No. 13","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":380990,"level":8,"canonical_url":"https://roadtovirtuosity.com/czerny-24-studies-for-the-left-hand-op-718-no-13","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":380990}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-15T11:06:39+00:00","first_published_at":"2026-09-15T11:06:39+00:00","published_at":"2026-09-15T11:06:39+00:00","updated_at":"2026-09-15T11:06:48+00:00","match_basis":"filters"},{"piece_id":4859,"title":"Czerny - 24 Studies for the Left Hand - Op. 718, No. 14","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":84557,"level":7,"canonical_url":"https://roadtovirtuosity.com/czerny-24-studies-for-the-left-hand-op-718-no-14","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":84557}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-15T11:06:54+00:00","first_published_at":"2026-09-15T11:06:54+00:00","published_at":"2026-09-15T11:06:54+00:00","updated_at":"2026-09-15T11:07:03+00:00","match_basis":"filters"},{"piece_id":4860,"title":"Czerny - 24 Studies for the Left Hand - Op. 718, No. 15","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":54120,"level":7,"canonical_url":"https://roadtovirtuosity.com/czerny-24-studies-for-the-left-hand-op-718-no-15","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":54120}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-15T11:07:27+00:00","first_published_at":"2026-09-15T11:07:27+00:00","published_at":"2026-09-15T11:07:27+00:00","updated_at":"2026-09-15T11:07:35+00:00","match_basis":"filters"},{"piece_id":4861,"title":"Czerny - 24 Studies for the Left Hand - Op. 718, No. 16","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":57294,"level":7,"canonical_url":"https://roadtovirtuosity.com/czerny-24-studies-for-the-left-hand-op-718-no-16","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":57294}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-15T11:07:40+00:00","first_published_at":"2026-09-15T11:07:40+00:00","published_at":"2026-09-15T11:07:40+00:00","updated_at":"2026-09-15T11:07:47+00:00","match_basis":"filters"},{"piece_id":4862,"title":"Czerny - 24 Studies for the Left Hand - Op. 718, No. 17","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":463292,"level":8,"canonical_url":"https://roadtovirtuosity.com/czerny-24-studies-for-the-left-hand-op-718-no-17","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":463292}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-15T11:08:07+00:00","first_published_at":"2026-09-15T11:08:07+00:00","published_at":"2026-09-15T11:08:07+00:00","updated_at":"2026-09-15T11:08:15+00:00","match_basis":"filters"},{"piece_id":4863,"title":"Czerny - 24 Studies for the Left Hand - Op. 718, No. 18","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":59413,"level":7,"canonical_url":"https://roadtovirtuosity.com/czerny-24-studies-for-the-left-hand-op-718-no-18","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":59413}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-15T11:08:23+00:00","first_published_at":"2026-09-15T11:08:23+00:00","published_at":"2026-09-15T11:08:23+00:00","updated_at":"2026-09-15T11:08:29+00:00","match_basis":"filters"},{"piece_id":4864,"title":"Czerny - 24 Studies for the Left Hand - Op. 718, No. 19","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":7226,"level":5,"canonical_url":"https://roadtovirtuosity.com/czerny-24-studies-for-the-left-hand-op-718-no-19","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":7226}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-15T11:08:45+00:00","first_published_at":"2026-09-15T11:08:45+00:00","published_at":"2026-09-15T11:08:45+00:00","updated_at":"2026-09-15T11:08:52+00:00","match_basis":"filters"},{"piece_id":4847,"title":"Czerny - 24 Studies for the Left Hand - Op. 718, No. 2","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":66458,"level":7,"canonical_url":"https://roadtovirtuosity.com/czerny-24-studies-for-the-left-hand-op-718-no-2","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":66458}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-15T10:54:09+00:00","first_published_at":"2026-09-15T10:54:09+00:00","published_at":"2026-09-15T10:54:09+00:00","updated_at":"2026-09-15T10:55:06+00:00","match_basis":"filters"},{"piece_id":4865,"title":"Czerny - 24 Studies for the Left Hand - Op. 718, No. 20","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":5053,"level":4,"canonical_url":"https://roadtovirtuosity.com/czerny-24-studies-for-the-left-hand-op-718-no-20","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":5053}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-15T11:08:55+00:00","first_published_at":"2026-09-15T11:08:55+00:00","published_at":"2026-09-15T11:08:55+00:00","updated_at":"2026-09-15T11:09:03+00:00","match_basis":"filters"},{"piece_id":4866,"title":"Czerny - 24 Studies for the Left Hand - Op. 718, No. 21","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":6929,"level":5,"canonical_url":"https://roadtovirtuosity.com/czerny-24-studies-for-the-left-hand-op-718-no-21","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":6929}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-15T11:09:18+00:00","first_published_at":"2026-09-15T11:09:18+00:00","published_at":"2026-09-15T11:09:18+00:00","updated_at":"2026-09-15T11:09:35+00:00","match_basis":"filters"},{"piece_id":4867,"title":"Czerny - 24 Studies for the Left Hand - Op. 718, No. 22","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":13063,"level":5,"canonical_url":"https://roadtovirtuosity.com/czerny-24-studies-for-the-left-hand-op-718-no-22","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":13063}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-15T11:09:42+00:00","first_published_at":"2026-09-15T11:09:42+00:00","published_at":"2026-09-15T11:09:42+00:00","updated_at":"2026-09-15T11:09:54+00:00","match_basis":"filters"},{"piece_id":4868,"title":"Czerny - 24 Studies for the Left Hand - Op. 718, No. 23","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":56114,"level":7,"canonical_url":"https://roadtovirtuosity.com/czerny-24-studies-for-the-left-hand-op-718-no-23","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":56114}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-15T11:10:17+00:00","first_published_at":"2026-09-15T11:10:17+00:00","published_at":"2026-09-15T11:10:17+00:00","updated_at":"2026-09-15T11:10:26+00:00","match_basis":"filters"},{"piece_id":4869,"title":"Czerny - 24 Studies for the Left Hand - Op. 718, No. 24","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":19243,"level":6,"canonical_url":"https://roadtovirtuosity.com/czerny-24-studies-for-the-left-hand-op-718-no-24","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":19243}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-15T11:10:31+00:00","first_published_at":"2026-09-15T11:10:31+00:00","published_at":"2026-09-15T11:10:31+00:00","updated_at":"2026-09-15T11:10:38+00:00","match_basis":"filters"},{"piece_id":4848,"title":"Czerny - 24 Studies for the Left Hand - Op. 718, No. 3","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":56997,"level":7,"canonical_url":"https://roadtovirtuosity.com/czerny-24-studies-for-the-left-hand-op-718-no-3","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":56997}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-15T10:57:45+00:00","first_published_at":"2026-09-15T10:57:45+00:00","published_at":"2026-09-15T10:57:45+00:00","updated_at":"2026-09-15T10:58:04+00:00","match_basis":"filters"},{"piece_id":4849,"title":"Czerny - 24 Studies for the Left Hand - Op. 718, No. 4","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":64473,"level":7,"canonical_url":"https://roadtovirtuosity.com/czerny-24-studies-for-the-left-hand-op-718-no-4","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":64473}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-15T10:58:55+00:00","first_published_at":"2026-09-15T10:58:55+00:00","published_at":"2026-09-15T10:58:55+00:00","updated_at":"2026-09-15T10:59:03+00:00","match_basis":"filters"},{"piece_id":4850,"title":"Czerny - 24 Studies for the Left Hand - Op. 718, No. 5","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":55496,"level":7,"canonical_url":"https://roadtovirtuosity.com/czerny-24-studies-for-the-left-hand-op-718-no-5","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":55496}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-15T10:59:13+00:00","first_published_at":"2026-09-15T10:59:13+00:00","published_at":"2026-09-15T10:59:13+00:00","updated_at":"2026-09-15T10:59:21+00:00","match_basis":"filters"},{"piece_id":4851,"title":"Czerny - 24 Studies for the Left Hand - Op. 718, No. 6","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":53236,"level":7,"canonical_url":"https://roadtovirtuosity.com/czerny-24-studies-for-the-left-hand-op-718-no-6","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":53236}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-15T11:01:53+00:00","first_published_at":"2026-09-15T11:01:53+00:00","published_at":"2026-09-15T11:01:53+00:00","updated_at":"2026-09-15T11:02:18+00:00","match_basis":"filters"},{"piece_id":4852,"title":"Czerny - 24 Studies for the Left Hand - Op. 718, No. 7","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":57020,"level":7,"canonical_url":"https://roadtovirtuosity.com/czerny-24-studies-for-the-left-hand-op-718-no-7","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":57020}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-15T11:02:47+00:00","first_published_at":"2026-09-15T11:02:47+00:00","published_at":"2026-09-15T11:02:47+00:00","updated_at":"2026-09-15T11:03:06+00:00","match_basis":"filters"},{"piece_id":4853,"title":"Czerny - 24 Studies for the Left Hand - Op. 718, No. 8","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":6319,"level":5,"canonical_url":"https://roadtovirtuosity.com/czerny-24-studies-for-the-left-hand-op-718-no-8","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":6319}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-15T11:03:41+00:00","first_published_at":"2026-09-15T11:03:41+00:00","published_at":"2026-09-15T11:03:41+00:00","updated_at":"2026-09-15T11:03:47+00:00","match_basis":"filters"},{"piece_id":4854,"title":"Czerny - 24 Studies for the Left Hand - Op. 718, No. 9","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":211259,"level":8,"canonical_url":"https://roadtovirtuosity.com/czerny-24-studies-for-the-left-hand-op-718-no-9","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":211259}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-15T11:04:08+00:00","first_published_at":"2026-09-15T11:04:08+00:00","published_at":"2026-09-15T11:04:08+00:00","updated_at":"2026-09-15T11:04:14+00:00","match_basis":"filters"},{"piece_id":4304,"title":"Czerny - 25 Exercises for Small Hands - Op. 748, No. 1","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Classical","genre_id":1,"is_archive_only":false,"evaluation_eligible":true,"points":57261,"level":7,"canonical_url":"https://roadtovirtuosity.com/czerny-25-exercises-for-small-hands-op-748-no-1","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":57261}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-11T17:10:12+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-11T17:10:17+00:00","match_basis":"filters"},{"piece_id":4313,"title":"Czerny - 25 Exercises for Small Hands - Op. 748, No. 10","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Classical","genre_id":1,"is_archive_only":false,"evaluation_eligible":true,"points":113180,"level":7,"canonical_url":"https://roadtovirtuosity.com/czerny-25-exercises-for-small-hands-op-748-no-10","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":113180}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-11T17:13:37+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-11T17:13:41+00:00","match_basis":"filters"},{"piece_id":4314,"title":"Czerny - 25 Exercises for Small Hands - Op. 748, No. 11","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Classical","genre_id":1,"is_archive_only":false,"evaluation_eligible":true,"points":34672,"level":6,"canonical_url":"https://roadtovirtuosity.com/czerny-25-exercises-for-small-hands-op-748-no-11","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":34672}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-11T17:13:59+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-11T17:14:05+00:00","match_basis":"filters"},{"piece_id":4315,"title":"Czerny - 25 Exercises for Small Hands - Op. 748, No. 12","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Classical","genre_id":1,"is_archive_only":false,"evaluation_eligible":true,"points":90579,"level":7,"canonical_url":"https://roadtovirtuosity.com/czerny-25-exercises-for-small-hands-op-748-no-12","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":90579}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-11T17:14:22+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-11T17:14:27+00:00","match_basis":"filters"},{"piece_id":4316,"title":"Czerny - 25 Exercises for Small Hands - Op. 748, No. 13","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Classical","genre_id":1,"is_archive_only":false,"evaluation_eligible":true,"points":45463,"level":6,"canonical_url":"https://roadtovirtuosity.com/czerny-25-exercises-for-small-hands-op-748-no-13","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":45463}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-11T17:14:31+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-11T17:14:35+00:00","match_basis":"filters"},{"piece_id":4317,"title":"Czerny - 25 Exercises for Small Hands - Op. 748, No. 14","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Classical","genre_id":1,"is_archive_only":false,"evaluation_eligible":true,"points":314638,"level":8,"canonical_url":"https://roadtovirtuosity.com/czerny-25-exercises-for-small-hands-op-748-no-14","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":314638}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-11T17:14:53+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-11T17:14:58+00:00","match_basis":"filters"},{"piece_id":4318,"title":"Czerny - 25 Exercises for Small Hands - Op. 748, No. 15","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Classical","genre_id":1,"is_archive_only":false,"evaluation_eligible":true,"points":23700,"level":6,"canonical_url":"https://roadtovirtuosity.com/czerny-25-exercises-for-small-hands-op-748-no-15","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":23700}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-11T17:15:03+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-11T17:15:07+00:00","match_basis":"filters"},{"piece_id":4319,"title":"Czerny - 25 Exercises for Small Hands - Op. 748, No. 16","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Classical","genre_id":1,"is_archive_only":false,"evaluation_eligible":true,"points":47214,"level":6,"canonical_url":"https://roadtovirtuosity.com/czerny-25-exercises-for-small-hands-op-748-no-16","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":47214}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-11T17:15:25+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-11T17:15:30+00:00","match_basis":"filters"},{"piece_id":4320,"title":"Czerny - 25 Exercises for Small Hands - Op. 748, No. 17","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Classical","genre_id":1,"is_archive_only":false,"evaluation_eligible":true,"points":188036,"level":8,"canonical_url":"https://roadtovirtuosity.com/czerny-25-exercises-for-small-hands-op-748-no-17","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":188036}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-11T17:15:35+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-11T17:15:39+00:00","match_basis":"filters"},{"piece_id":4321,"title":"Czerny - 25 Exercises for Small Hands - Op. 748, No. 18","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Classical","genre_id":1,"is_archive_only":false,"evaluation_eligible":true,"points":295915,"level":8,"canonical_url":"https://roadtovirtuosity.com/czerny-25-exercises-for-small-hands-op-748-no-18","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":295915}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-11T17:15:56+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-11T17:16:01+00:00","match_basis":"filters"},{"piece_id":4322,"title":"Czerny - 25 Exercises for Small Hands - Op. 748, No. 19","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Classical","genre_id":1,"is_archive_only":false,"evaluation_eligible":true,"points":45909,"level":6,"canonical_url":"https://roadtovirtuosity.com/czerny-25-exercises-for-small-hands-op-748-no-19","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":45909}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-11T17:16:16+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-11T17:16:21+00:00","match_basis":"filters"},{"piece_id":4305,"title":"Czerny - 25 Exercises for Small Hands - Op. 748, No. 2","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Classical","genre_id":1,"is_archive_only":false,"evaluation_eligible":true,"points":62962,"level":7,"canonical_url":"https://roadtovirtuosity.com/czerny-25-exercises-for-small-hands-op-748-no-2","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":62962}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-11T17:10:47+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-11T17:10:51+00:00","match_basis":"filters"},{"piece_id":4323,"title":"Czerny - 25 Exercises for Small Hands - Op. 748, No. 20","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Classical","genre_id":1,"is_archive_only":false,"evaluation_eligible":true,"points":57843,"level":7,"canonical_url":"https://roadtovirtuosity.com/czerny-25-exercises-for-small-hands-op-748-no-20","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":57843}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-11T17:16:27+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-11T17:16:31+00:00","match_basis":"filters"},{"piece_id":4324,"title":"Czerny - 25 Exercises for Small Hands - Op. 748, No. 21","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Classical","genre_id":1,"is_archive_only":false,"evaluation_eligible":true,"points":73557,"level":7,"canonical_url":"https://roadtovirtuosity.com/czerny-25-exercises-for-small-hands-op-748-no-21","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":73557}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-11T17:16:48+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-11T17:16:52+00:00","match_basis":"filters"},{"piece_id":4325,"title":"Czerny - 25 Exercises for Small Hands - Op. 748, No. 22","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Classical","genre_id":1,"is_archive_only":false,"evaluation_eligible":true,"points":81911,"level":7,"canonical_url":"https://roadtovirtuosity.com/czerny-25-exercises-for-small-hands-op-748-no-22","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":81911}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-11T17:16:58+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-11T17:17:03+00:00","match_basis":"filters"},{"piece_id":4326,"title":"Czerny - 25 Exercises for Small Hands - Op. 748, No. 23","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Classical","genre_id":1,"is_archive_only":false,"evaluation_eligible":true,"points":60677,"level":7,"canonical_url":"https://roadtovirtuosity.com/czerny-25-exercises-for-small-hands-op-748-no-23","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":60677}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-11T17:17:19+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-11T17:17:23+00:00","match_basis":"filters"},{"piece_id":4327,"title":"Czerny - 25 Exercises for Small Hands - Op. 748, No. 24","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Classical","genre_id":1,"is_archive_only":false,"evaluation_eligible":true,"points":470683,"level":8,"canonical_url":"https://roadtovirtuosity.com/czerny-25-exercises-for-small-hands-op-748-no-24","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":470683}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-11T17:17:45+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-11T17:17:49+00:00","match_basis":"filters"},{"piece_id":4328,"title":"Czerny - 25 Exercises for Small Hands - Op. 748, No. 25","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Classical","genre_id":1,"is_archive_only":false,"evaluation_eligible":true,"points":221555,"level":8,"canonical_url":"https://roadtovirtuosity.com/czerny-25-exercises-for-small-hands-op-748-no-25","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":221555}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-11T17:17:55+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-11T17:17:59+00:00","match_basis":"filters"},{"piece_id":4306,"title":"Czerny - 25 Exercises for Small Hands - Op. 748, No. 3","composer":["Czerny, Carl"],"composers":[{"id":2,"name":"Czerny, Carl"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Classical","genre_id":1,"is_archive_only":false,"evaluation_eligible":true,"points":68035,"level":7,"canonical_url":"https://roadtovirtuosity.com/czerny-25-exercises-for-small-hands-op-748-no-3","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":68035}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Public Domain","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","created_at":"2026-09-11T17:11:09+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-11T17:11:13+00:00","match_basis":"filters"}],"latest_catalog_version":23631,"source_lag_revisions":1075}