{"projection_revision":2,"snapshot":"04df10e12c4bc0d9dfff36d6ce703e6d","catalog_version":23822,"snapshot_created_at":"2026-10-01T18:13:19+00:00","snapshot_expires_at":"2026-10-02T18:13:19+00:00","source_changed_at":"2026-10-01T18:07:54+00:00","freshness_behavior":"materialized on first request after a committed source change; database triggers cover row writes and relationship writes","source_id_sha256":"72fa8e0e111dfb6d7b466ee5d12ee4be480f947d97696f393a4367db72165e68","source_content_sha256":"de0bb3e833adcf3dfd9d3edbc04819a127e5ee3a5cc55172ebb31023aec64aea","total_catalog_pieces":6607,"schema_version":"2.0","query":"","normalized_query":"","resolved_filters":{"piece_id":4308,"timezone":"UTC"},"sort":"relevance","projection":"full","total_matches":1,"returned":1,"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/pieces/4308?page=1&piece_id=4308&projection=full&snapshot=04df10e12c4bc0d9dfff36d6ce703e6d","json":"https://roadtovirtuosity.com/ai/catalog/pieces/4308.json?page=1&piece_id=4308&projection=full&snapshot=04df10e12c4bc0d9dfff36d6ce703e6d","text":"https://roadtovirtuosity.com/ai/catalog/pieces/4308.txt?page=1&piece_id=4308&projection=full&snapshot=04df10e12c4bc0d9dfff36d6ce703e6d"},"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."],"publication_count_scope":"currently public entries first published during the requested interval","unknown_publication_dates_before_date_filter":1,"distinct_work_count":null,"approximate_suggestions":[],"message":null,"pieces":[{"piece_id":4308,"title":"Czerny - 25 Exercises for Small Hands - Op. 748, 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":124155,"level":7,"canonical_url":"https://roadtovirtuosity.com/czerny-25-exercises-for-small-hands-op-748-no-5","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":124155}],"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","description":"Measures 1–8 combine flowing left-hand figures with right-hand grace notes, short replies, and longer melody notes. Measures 9–16 transfer the broken figures to the right hand, and measure 17 restores the opening texture. From measure 24, detached left-hand chords replace the continuous accompaniment. Upper scales and a final bass figure lead to the closing C-major chords.","created_at":"2026-09-11T17:11:55+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-11T17:11:59+00:00","match_basis":"filters"}],"latest_catalog_version":23822,"source_lag_revisions":0}