RTV PUBLIC REPERTOIRE CATALOG
Query: (all public entries)
Filters: {"piece_id":4523,"timezone":"UTC"}
Matches: 1 | Returned: 1 | Public catalog: 6494
Page 1 of 1
Next: none; end of results
Previous: none
Version: 23031 | Snapshot: facf137b0691d99ac9955a6dd7e22280
Created: 2026-10-01T04:39:18+00:00 | Source: 2026-10-01T04:28:34+00:00 | Expires: 2026-10-02T04:39:18+00:00


{"piece_id":4523,"title":"Mendelssohn - Songs Without Words - Op. 67, No. 4","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":479733,"level":8,"canonical_url":"https://roadtovirtuosity.com/mendelssohn-songs-without-words-op-67-no-4","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":479733}],"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 the continuous sixteenth-note motion of this C-major song. A melody emerges above the running notes in measure 3, accompanied by short bass notes. Measures 17-24 add grace notes and exchanges between the hands. The opening texture returns in measure 25, with the melody following in measure 30. Measures 56-64 move through chromatic harmony before another melodic return in measure 65. Measures 89-96 bring rising figures and short final chords.","created_at":"2026-09-12T03:21:43+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-12T03:21:48+00:00","match_basis":"filters"}

Full response metadata (including counts, interpretation and alternate links):
{
    "projection_revision": 2,
    "snapshot": "facf137b0691d99ac9955a6dd7e22280",
    "catalog_version": 23031,
    "snapshot_created_at": "2026-10-01T04:39:18+00:00",
    "snapshot_expires_at": "2026-10-02T04:39:18+00:00",
    "source_changed_at": "2026-10-01T04:28:34+00:00",
    "freshness_behavior": "materialized on first request after a committed source change; database triggers cover row writes and relationship writes",
    "source_id_sha256": "585e4b233d6ac68ab85d08853b482816b328d22cf0ca860c40eb41528a187ade",
    "source_content_sha256": "be0bb5aabff9c9a8c4506547d8263b8cec68d47976158a8e53c1d7e76aad0f33",
    "total_catalog_pieces": 6494,
    "schema_version": "2.0",
    "query": "",
    "normalized_query": "",
    "resolved_filters": {
        "piece_id": 4523,
        "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/4523?page=1&piece_id=4523&projection=full&snapshot=facf137b0691d99ac9955a6dd7e22280",
        "json": "https://roadtovirtuosity.com/ai/catalog/pieces/4523.json?page=1&piece_id=4523&projection=full&snapshot=facf137b0691d99ac9955a6dd7e22280",
        "text": "https://roadtovirtuosity.com/ai/catalog/pieces/4523.txt?page=1&piece_id=4523&projection=full&snapshot=facf137b0691d99ac9955a6dd7e22280"
    },
    "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,
    "latest_catalog_version": 23031,
    "source_lag_revisions": 0
}