Aahhh this is so beautiful!
I really hope the musician sees this piece and you two can collaborate more in the future. You both complement each other well.
This piece really stands out, and I adore everything about what you've chosen to include. The colour scheme is dark, starry and mysterious just like the music, and the sketchy traditional finish you've given the small rotating pedestal is the icing on the cake. There's something about the tiny scale of the house and the rest of the objects floating on the vast ocean that just harmonizes with the cute tiny 8-bit notes in the song, too.
Stellar job.