{"copyright_id":"0xeafe56d4bb9264315bf438ac5c214a7911409254c9116cb1ed857b55f5eb0677","isrc":"JPU902105436","name":"ソナタ ニ長調 作品21 - III. ロンド","registered_at":"2026-07-07T16:39:48Z","spotify_id":"0QoYd37jVWnhtSraEfY4IE","type":"track"}