{"copyright_id":"0xee4f83ecdaadcbf54906986bd1d7f1d0353167ad8762dbcfcf08f5e0958546cf","isrc":"GBAYD0400066","name":"Mazurkas, Op. 68: No. 4 in F Minor","registered_at":"2026-07-31T12:18:42Z","spotify_id":"6pB1dSGixkX4HHjDCmGUr9","type":"track"}