{"projection_revision":2,"snapshot":"dd991bc57de302cf4c85c37ff0c4771c","catalog_version":23257,"snapshot_created_at":"2026-10-01T06:56:06+00:00","snapshot_expires_at":"2026-10-02T06:56:06+00:00","source_changed_at":"2026-10-01T06:54:01+00:00","freshness_behavior":"materialized on first request after a committed source change; database triggers cover row writes and relationship writes","source_id_sha256":"f1f40429b24c3b4ada635b7bdc9d69be1c5ac79eeab819df421c333f1f95902c","source_content_sha256":"ea904ff74f853fd3545e3127b02e4fca6c949e7c6d6c3b410079e0be75d2d29d","total_catalog_pieces":6506,"schema_version":"2.0","query":"","normalized_query":"","resolved_filters":{"piece_id":3573,"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/3573?page=1&piece_id=3573&projection=full&snapshot=dd991bc57de302cf4c85c37ff0c4771c","json":"https://roadtovirtuosity.com/ai/catalog/pieces/3573.json?page=1&piece_id=3573&projection=full&snapshot=dd991bc57de302cf4c85c37ff0c4771c","text":"https://roadtovirtuosity.com/ai/catalog/pieces/3573.txt?page=1&piece_id=3573&projection=full&snapshot=dd991bc57de302cf4c85c37ff0c4771c"},"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":3573,"title":"Czerny - 125 Exercises in Passage Playing - Op. 261, No. 26","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":3132,"level":4,"canonical_url":"https://roadtovirtuosity.com/czerny-125-exercises-in-passage-playing-op-261-no-26","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":3132}],"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","description":"","created_at":"2025-01-08T13:16:46+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-22T18:06:07+00:00","match_basis":"filters"}],"latest_catalog_version":23257,"source_lag_revisions":0}