{"copyright_id":"0x78d81fa00440ceda9f053b818bdf5c1542289614c0734f5bb96d1160bf149ba0","isrc":"USB8U1700368","name":"Piano Sonata No. 21 in C Major, Op. 53 \"Waldstein\": I. Allegro con brio","registered_at":"2026-07-31T14:43:14Z","spotify_id":"4QW9pcfKUF3LJim3SI1VU6","type":"track"}