{"projection_revision":2,"snapshot":"68f54b6b73cd55101ef01fb5e6d6a46b","catalog_version":23021,"snapshot_created_at":"2026-10-01T02:09:57+00:00","snapshot_expires_at":"2026-10-02T02:09:57+00:00","source_changed_at":"2026-10-01T02:09:38+00:00","freshness_behavior":"materialized on first request after a committed source change; database triggers cover row writes and relationship writes","source_id_sha256":"f273c912a4846e0b17d5f83c070d82270aeeaabbb0d76ca831163ba182e4ad88","source_content_sha256":"ea0602537280d767f49b96e9d2afc415b2692d275b24efd81c1ecbff3b16119c","total_catalog_pieces":6493,"schema_version":"2.0","query":"","normalized_query":"","resolved_filters":{"piece_id":4508,"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/4508?page=1&piece_id=4508&projection=full&snapshot=68f54b6b73cd55101ef01fb5e6d6a46b","json":"https://roadtovirtuosity.com/ai/catalog/pieces/4508.json?page=1&piece_id=4508&projection=full&snapshot=68f54b6b73cd55101ef01fb5e6d6a46b","text":"https://roadtovirtuosity.com/ai/catalog/pieces/4508.txt?page=1&piece_id=4508&projection=full&snapshot=68f54b6b73cd55101ef01fb5e6d6a46b"},"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":4508,"title":"Mendelssohn - Songs Without Words - Op. 53, No. 1","composer":["Mendelssohn, Felix"],"composers":[{"id":97,"name":"Mendelssohn, Felix"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":133488,"level":7,"canonical_url":"https://roadtovirtuosity.com/mendelssohn-songs-without-words-op-53-no-1","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":133488}],"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 1-2 establish a flowing accompaniment in A-flat major, with the melody entering in measure 3. Measures 3-12 trace a gently rising and falling phrase above sustained bass notes. Measures 13-23 bring chromatic harmony and stronger accents before the quieter return in measure 24. From measure 49, melodic echoes move through the inner and lower voices. Measures 61-64 settle into a soft ending over the opening accompaniment.","created_at":"2026-09-12T03:08:42+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-12T03:08:47+00:00","match_basis":"filters"}],"latest_catalog_version":23021,"source_lag_revisions":0}