{"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":3,"timezone":"UTC"},"sort":"relevance","projection":"compact","total_matches":46,"returned":46,"page":1,"per_page":50,"total_pages":1,"previous_page_url":null,"next_page_url":null,"end_of_results":true,"alternate_formats":{"html":"https://roadtovirtuosity.com/ai/catalog?composer_id=3&page=1&snapshot=652b209e8a4c0fc1ece71e35299ddeda","json":"https://roadtovirtuosity.com/ai/catalog.json?composer_id=3&page=1&snapshot=652b209e8a4c0fc1ece71e35299ddeda","text":"https://roadtovirtuosity.com/ai/catalog.txt?composer_id=3&page=1&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":46,"distinct_work_count":null,"approximate_suggestions":[],"message":null,"pieces":[{"piece_id":3039,"title":"Kohler - Carefree Stroll","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":542,"level":2,"canonical_url":"https://roadtovirtuosity.com/kohler-carefree-stroll","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":542}],"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":"2024-06-24T19:51:18+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-06-06T15:38:19+00:00","match_basis":"filters"},{"piece_id":2970,"title":"Kohler - Deutches Volkslied - Op. 300, No. 54","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":240,"level":2,"canonical_url":"https://roadtovirtuosity.com/kohler-op-300-no-54","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":240}],"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":"2024-06-15T22:17:32+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-22T17:51:28+00:00","match_basis":"filters"},{"piece_id":3036,"title":"Kohler - Op. 162, No. 13","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":54,"level":1,"canonical_url":"https://roadtovirtuosity.com/kohler-op-162-no-13","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":54}],"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":"2024-06-24T19:15:55+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-06-08T02:43:28+00:00","match_basis":"filters"},{"piece_id":3165,"title":"Kohler - Op. 163, No. 1","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":185,"level":1,"canonical_url":"https://roadtovirtuosity.com/kohler-op-163-no-1","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":185}],"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":"2024-07-04T18:41:35+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-22T17:44:14+00:00","match_basis":"filters"},{"piece_id":3166,"title":"Kohler - Op. 163, No. 3","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":185,"level":1,"canonical_url":"https://roadtovirtuosity.com/kohler-op-163-no-3","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":185}],"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":"2024-07-04T18:50:04+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-22T17:44:03+00:00","match_basis":"filters"},{"piece_id":2619,"title":"Kohler - Op. 190, No. 15","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":20,"level":0,"canonical_url":"https://roadtovirtuosity.com/kohler-op-190-no-15","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":20}],"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":"2024-05-07T19:33:00+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-22T17:52:45+00:00","match_basis":"filters"},{"piece_id":2631,"title":"Kohler - Op. 190, No. 16","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":46,"level":0,"canonical_url":"https://roadtovirtuosity.com/kohler-op-190-no-16","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":46}],"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":"2024-05-08T11:47:29+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-22T17:52:01+00:00","match_basis":"filters"},{"piece_id":3119,"title":"Kohler - Op. 190, No. 18","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":126,"level":1,"canonical_url":"https://roadtovirtuosity.com/kohler-op-190-no-18","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":126}],"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":"2024-06-27T23:47:13+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-22T17:46:47+00:00","match_basis":"filters"},{"piece_id":3161,"title":"Kohler - Op. 190, No. 27","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":180,"level":1,"canonical_url":"https://roadtovirtuosity.com/kohler-op-190-no-27","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":180}],"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":"2024-07-03T19:39:47+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-22T17:44:25+00:00","match_basis":"filters"},{"piece_id":2424,"title":"Kohler - Op. 190, No. 30","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":1060,"level":3,"canonical_url":"https://roadtovirtuosity.com/kohler-op-190-no-30","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":1060}],"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":"2024-04-16T05:16:02+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-22T17:57:05+00:00","match_basis":"filters"},{"piece_id":3115,"title":"Kohler - Op. 190, No. 31","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":118,"level":1,"canonical_url":"https://roadtovirtuosity.com/kohler-op-190-no-31","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":118}],"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":"2024-06-27T22:43:42+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-22T17:47:14+00:00","match_basis":"filters"},{"piece_id":2620,"title":"Kohler - Op. 190, No. 8","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":22,"level":0,"canonical_url":"https://roadtovirtuosity.com/kohler-op-190-no-8","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":22}],"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":"2024-05-07T19:40:06+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-22T17:52:34+00:00","match_basis":"filters"},{"piece_id":2623,"title":"Kohler - Op. 190, No. 9","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":26,"level":0,"canonical_url":"https://roadtovirtuosity.com/kohler-op-190-no-9","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":26}],"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":"2024-05-08T10:57:04+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-22T17:52:23+00:00","match_basis":"filters"},{"piece_id":3058,"title":"Kohler - Op. 218, No. 32","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":606,"level":2,"canonical_url":"https://roadtovirtuosity.com/kohler-op-218-no-32","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":606}],"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":"2024-06-26T00:25:48+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-06-06T15:36:45+00:00","match_basis":"filters"},{"piece_id":2513,"title":"Kohler - Op. 249, No. 102","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":2388,"level":3,"canonical_url":"https://roadtovirtuosity.com/kohler-op-249-no-1","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":2388}],"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":"2024-04-17T18:11:48+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-22T17:54:49+00:00","match_basis":"filters"},{"piece_id":3061,"title":"Kohler - Op. 249, No. 114","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":612,"level":2,"canonical_url":"https://roadtovirtuosity.com/kohler-op-249-no-114","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":612}],"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":"2024-06-26T10:57:05+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-22T17:47:34+00:00","match_basis":"filters"},{"piece_id":3139,"title":"Kohler - Op. 249, No. 119","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":860,"level":2,"canonical_url":"https://roadtovirtuosity.com/kohler-op-249-no-119","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":860}],"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":"2024-06-29T16:01:47+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-06-23T20:55:15+00:00","match_basis":"filters"},{"piece_id":2446,"title":"Kohler - Op. 249, No. 123","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":1385,"level":3,"canonical_url":"https://roadtovirtuosity.com/kohler-op-249-no-123","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":1385}],"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":"2024-04-16T19:55:42+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-22T17:55:36+00:00","match_basis":"filters"},{"piece_id":2494,"title":"Kohler - Op. 249, No. 138","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":2035,"level":3,"canonical_url":"https://roadtovirtuosity.com/kohler-op-249-no-138","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":2035}],"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":"2024-04-17T16:40:49+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-22T17:55:25+00:00","match_basis":"filters"},{"piece_id":3037,"title":"Kohler - Op. 249, No. 17","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":56,"level":1,"canonical_url":"https://roadtovirtuosity.com/kohler-op-249-no-17","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":56}],"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":"2024-06-24T19:27:21+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-22T17:49:20+00:00","match_basis":"filters"},{"piece_id":3047,"title":"Kohler - Op. 249, No. 20","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":65,"level":1,"canonical_url":"https://roadtovirtuosity.com/kohler-op-249-no-20","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":65}],"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":"2024-06-25T16:16:48+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-22T17:49:12+00:00","match_basis":"filters"},{"piece_id":3071,"title":"Kohler - Op. 249, No. 23","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":95,"level":1,"canonical_url":"https://roadtovirtuosity.com/kohler-op-249-no-23","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":95}],"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":"2024-06-26T18:48:38+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-22T17:47:24+00:00","match_basis":"filters"},{"piece_id":3120,"title":"Kohler - Op. 249, No. 24","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":128,"level":1,"canonical_url":"https://roadtovirtuosity.com/kohler-op-249-no-24","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":128}],"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":"2024-06-27T23:56:38+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-22T17:46:39+00:00","match_basis":"filters"},{"piece_id":3148,"title":"Kohler - Op. 249, No. 27","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":152,"level":1,"canonical_url":"https://roadtovirtuosity.com/kohler-op-249-no-27","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":152}],"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":"2024-07-01T19:07:39+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-22T17:45:02+00:00","match_basis":"filters"},{"piece_id":2992,"title":"Kohler - Op. 249, No. 35","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":336,"level":2,"canonical_url":"https://roadtovirtuosity.com/kohler-op-249-no-35","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":336}],"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":"2024-06-19T11:01:53+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-06-17T05:12:36+00:00","match_basis":"filters"},{"piece_id":3012,"title":"Kohler - Op. 249, No. 57","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":456,"level":2,"canonical_url":"https://roadtovirtuosity.com/kohler-op-249-no-57","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":456}],"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":"2024-06-22T15:36:48+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-22T17:49:47+00:00","match_basis":"filters"},{"piece_id":2983,"title":"Kohler - Op. 249, No. 62","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":308,"level":2,"canonical_url":"https://roadtovirtuosity.com/kohler-op-249-no-62","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":308}],"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":"2024-06-18T10:24:58+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-22T17:50:11+00:00","match_basis":"filters"},{"piece_id":3011,"title":"Kohler - Op. 249, No. 63","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":455,"level":2,"canonical_url":"https://roadtovirtuosity.com/kohler-op-249-no-63","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":455}],"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":"2024-06-22T15:25:16+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-22T17:49:58+00:00","match_basis":"filters"},{"piece_id":3060,"title":"Kohler - Op. 249, No. 68","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":610,"level":2,"canonical_url":"https://roadtovirtuosity.com/kohler-op-249-no-68","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":610}],"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":"2024-06-26T10:48:04+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-22T17:47:45+00:00","match_basis":"filters"},{"piece_id":2430,"title":"Kohler - Op. 249, No. 69","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":1165,"level":3,"canonical_url":"https://roadtovirtuosity.com/kohler-op-249-no-69","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":1165}],"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":"2024-04-16T05:32:38+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-22T17:56:14+00:00","match_basis":"filters"},{"piece_id":3143,"title":"Kohler - Op. 249, No. 73","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":920,"level":2,"canonical_url":"https://roadtovirtuosity.com/kohler-op-249-no-73","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":920}],"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":"2024-07-01T17:45:34+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-22T17:45:14+00:00","match_basis":"filters"},{"piece_id":2487,"title":"Kohler - Op. 249, No. 81","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":1898,"level":3,"canonical_url":"https://roadtovirtuosity.com/kohler-op-249-no-81","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":1898}],"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":"2024-04-17T16:08:59+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-06-21T17:31:58+00:00","match_basis":"filters"},{"piece_id":2500,"title":"Kohler - Op. 249, No. 83","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":2180,"level":3,"canonical_url":"https://roadtovirtuosity.com/kohler-op-249-no-83","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":2180}],"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":"2024-04-17T17:37:06+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-22T17:55:14+00:00","match_basis":"filters"},{"piece_id":3057,"title":"Kohler - Op. 249, No. 87","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":605,"level":2,"canonical_url":"https://roadtovirtuosity.com/kohler-op-249-no-87","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":605}],"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":"2024-06-25T20:48:44+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-22T17:48:54+00:00","match_basis":"filters"},{"piece_id":3028,"title":"Kohler - Op. 249, No. 96","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":524,"level":2,"canonical_url":"https://roadtovirtuosity.com/kohler-op-249-no-96","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":524}],"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":"2024-06-23T14:08:55+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-22T17:49:37+00:00","match_basis":"filters"},{"piece_id":2611,"title":"Kohler - Op. 300, No. 10","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":6,"level":0,"canonical_url":"https://roadtovirtuosity.com/kohler-op-300-no-10","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":6}],"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":"2024-05-06T21:13:38+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-22T17:54:38+00:00","match_basis":"filters"},{"piece_id":2613,"title":"Kohler - Op. 300, No. 11","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":10,"level":0,"canonical_url":"https://roadtovirtuosity.com/kohler-op-300-no-11","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":10}],"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":"2024-05-06T23:20:28+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-22T17:54:26+00:00","match_basis":"filters"},{"piece_id":2614,"title":"Kohler - Op. 300, No. 12","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":10,"level":0,"canonical_url":"https://roadtovirtuosity.com/kohler-op-300-no-12","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":10}],"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":"2024-05-06T23:46:30+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-22T17:54:14+00:00","match_basis":"filters"},{"piece_id":2615,"title":"Kohler - Op. 300, No. 25","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":10,"level":0,"canonical_url":"https://roadtovirtuosity.com/kohler-op-300-no-25","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":10}],"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":"2024-05-06T23:53:18+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-22T17:52:56+00:00","match_basis":"filters"},{"piece_id":3049,"title":"Kohler - Op. 300, No. 30","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":70,"level":1,"canonical_url":"https://roadtovirtuosity.com/kohler-op-300-no-30","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":70}],"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":"2024-06-25T17:05:00+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-22T17:49:04+00:00","match_basis":"filters"},{"piece_id":2632,"title":"Kohler - Op. 300, No. 31","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":48,"level":0,"canonical_url":"https://roadtovirtuosity.com/kohler-op-300-no-31","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":48}],"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":"2024-05-08T11:51:31+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-22T17:51:50+00:00","match_basis":"filters"},{"piece_id":3159,"title":"Kohler - Op. 300, No. 51","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":174,"level":1,"canonical_url":"https://roadtovirtuosity.com/kohler-op-300-no-51","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":174}],"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":"2024-07-03T19:11:01+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-22T17:44:54+00:00","match_basis":"filters"},{"piece_id":2444,"title":"Kohler - Op. 300, No. 75","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":1368,"level":3,"canonical_url":"https://roadtovirtuosity.com/kohler-op-300-no-75","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":1368}],"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":"2024-04-16T19:50:33+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-22T17:55:49+00:00","match_basis":"filters"},{"piece_id":2969,"title":"Kohler - Theme and Variation From Op. 300","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":238,"level":2,"canonical_url":"https://roadtovirtuosity.com/kohler-op-300-theme-and-variation","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":238}],"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":"2024-06-15T22:06:33+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-22T17:51:38+00:00","match_basis":"filters"},{"piece_id":2428,"title":"Kohler - Volkslied - Op. 300, No. 56","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":1136,"level":3,"canonical_url":"https://roadtovirtuosity.com/kohler-volkslied","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":1136}],"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":"2024-04-16T05:27:12+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-22T17:56:55+00:00","match_basis":"filters"},{"piece_id":3133,"title":"Kohler - Volkslied - Op. 300, No. 70","composer":["Kohler, Louis"],"composers":[{"id":3,"name":"Kohler, Louis"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":812,"level":2,"canonical_url":"https://roadtovirtuosity.com/kohler-op-300-no-70-volkslied","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":812}],"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":"2024-06-28T23:12:54+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-22T17:46:28+00:00","match_basis":"filters"}],"latest_catalog_version":22876,"source_lag_revisions":320}