What a cool concept! The music fits perfectly the idea (man I'll never grow tired of Love Dream), and this arrangement is beautiful to listen to. Also movement in the game feel incredibly great! Running, grinding and swimming is just fun by itself.
The only thing I found odd was the small exploration part: having to go backward, or stop down to look around, kinda stop the momentum of the music. It sounded more satisfying to keep going forward, and unroll the music.
It was still a cool experience overall. Congratulation for such a beautiful game!