{"copyright_id":"0x9a45a305eb6f602e4d39fd740ffd8b413b2c148bed2fa5a843f4d46fbe6af5ec","isrc":"DEN961404863","name":"Piano Sonata No. 29 in B-Flat Major, Op. 106 \"Hammerklavier\": III. Adagio sostenuto","registered_at":"2026-07-07T05:30:39Z","spotify_id":"7ftfbMsO7D1KC6IL3cACJB","type":"track"}