{"projection_revision":2,"snapshot":"a958ae5acf7dcbba799fbd45a818b6bd","catalog_version":22626,"snapshot_created_at":"2026-09-30T20:04:39+00:00","snapshot_expires_at":"2026-10-01T20:04:39+00:00","source_changed_at":"2026-09-30T19:56:35+00:00","freshness_behavior":"materialized on first request after a committed source change; database triggers cover row writes and relationship writes","source_id_sha256":"97be1923126bb373543e238030c40eceb026428781a651646c8dfe9361162953","source_content_sha256":"b528471704d1c8359e5996926bc7e8e9cc5bbe4c20d1689d1843db3f660cfdfb","total_catalog_pieces":6414,"schema_version":"2.0","query":"","normalized_query":"","resolved_filters":{"piece_id":4420,"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/4420?page=1&piece_id=4420&projection=full&snapshot=a958ae5acf7dcbba799fbd45a818b6bd","json":"https://roadtovirtuosity.com/ai/catalog/pieces/4420.json?page=1&piece_id=4420&projection=full&snapshot=a958ae5acf7dcbba799fbd45a818b6bd","text":"https://roadtovirtuosity.com/ai/catalog/pieces/4420.txt?page=1&piece_id=4420&projection=full&snapshot=a958ae5acf7dcbba799fbd45a818b6bd"},"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":4420,"title":"Bach - The Well-Tempered Clavier, Book I - Fugue No. 12 in F Minor - BWV 857","composer":["Bach, Johann Sebastian"],"composers":[{"id":105,"name":"Bach, Johann Sebastian"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Baroque","genre_id":2,"is_archive_only":false,"evaluation_eligible":true,"points":85768,"level":7,"canonical_url":"https://roadtovirtuosity.com/bach-the-well-tempered-clavier-book-i-fugue-no-12-in-f-minor-bwv-857","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":85768}],"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 1–12 introduce a chromatic subject in quarter notes, gradually building a four-voice texture around it with more flowing eighth-note figures. Measures 13–46 exchange the subject and shorter figures between registers, moving through chromatic harmonies and varying the number of sounding voices. Measures 47–58 bring further subject statements into the closing passage, where running lines give way to a sustained final chord.","created_at":"2026-09-11T20:06:41+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-11T20:06:46+00:00","match_basis":"filters"}],"latest_catalog_version":22626,"source_lag_revisions":0}