{"copyright_id":"0xd04076fa01ce6018b62cf59aa0270d81383a1cc1d56e06415587dca56da1008d","isrc":"FRZ130948090","name":"String Quartet No. 6 in B-Flat Major, Op. 18: IV. Adagio \"La Malinconia\" - Allegretto quasi allegro","registered_at":"2026-07-30T14:56:43Z","spotify_id":"78dAZt6jmUrUjlT0dQVL8a","type":"track"}