{"projection_revision":2,"snapshot":"b74778db4eb86886bf2a2888634fb96c","catalog_version":23356,"snapshot_created_at":"2026-10-01T10:50:41+00:00","snapshot_expires_at":"2026-10-02T10:50:41+00:00","source_changed_at":"2026-10-01T10:49:28+00:00","freshness_behavior":"materialized on first request after a committed source change; database triggers cover row writes and relationship writes","source_id_sha256":"5c248e39144e07fbe53310a1468b220806b0062f8345033a16ab0720c793cc1e","source_content_sha256":"94e11b0636bb192bc29575e96afc0a2f9a1ddfd7b00fd2baebb41c656e61a37c","total_catalog_pieces":6525,"schema_version":"2.0","query":"","normalized_query":"","resolved_filters":{"piece_id":4393,"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/4393?page=1&piece_id=4393&projection=full&snapshot=b74778db4eb86886bf2a2888634fb96c","json":"https://roadtovirtuosity.com/ai/catalog/pieces/4393.json?page=1&piece_id=4393&projection=full&snapshot=b74778db4eb86886bf2a2888634fb96c","text":"https://roadtovirtuosity.com/ai/catalog/pieces/4393.txt?page=1&piece_id=4393&projection=full&snapshot=b74778db4eb86886bf2a2888634fb96c"},"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":4393,"title":"Burgmuller - Sylphs - Op. 109, No. 15","composer":["Burgmuller, Friedrich"],"composers":[{"id":12,"name":"Burgmuller, Friedrich"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":53858,"level":7,"canonical_url":"https://roadtovirtuosity.com/burgmuller-op-109-no-15-sylphs","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":53858}],"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 introduce brief upper flourishes and detached replies in G minor and 3/8. Measures 9–40 develop these figures over bass notes and chords, alternating high-register gestures with slurred phrases and building to the marked ending. Measures 41–43 provide a short transition. Measures 44–61 move into G major with a broader singing melody, repeated inner chords, and occasional upper runs. Measures 62–68 descend through quieter harmonies before the written direction returns to the opening and its marked ending.","created_at":"2026-09-11T18:49:20+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-13T05:06:05+00:00","match_basis":"filters"}],"latest_catalog_version":23356,"source_lag_revisions":0}