{"copyright_id":"0x742d653524aed5a6642b4a9cbdc7e459a2fae65ae694ff392768305d4b8d921a","isrc":"NLE421800103","name":"Piano Sonata No. 29 in B-Flat Major, Op. 106 \"Hammerklavier\": III. Adagio sostenuto","registered_at":"2026-07-31T20:10:44Z","spotify_id":"6bi68ZXH5Co3cxLb8oi3a3","type":"track"}