{"copyright_id":"0xf031f8219f2be8adce0b3a32689dc970d864ada8c58e152691e4f933b5da13a9","isrc":"DEF056601352","name":"String Sextet No. 1 in B Flat Major, Op. 18: I. Allegro ma non troppo","registered_at":"2026-07-30T07:02:24Z","spotify_id":"6Rx1nds5YYeOYO7Z2DdVS2","type":"track"}