Hey, a "turn the music on/off" game - nice, that's what I did as well! The art style is lovely, especially the colorful music notation. And I love the idea of using the notes as platforms, so cool! There are a few bugs as mentioned in the other comments, but I was still able to play quite a bit, and it's impressive what you were able to do in the limited jam time!
And if you haven't had a chance to check out my game Foxy Boom Boxy, I would appreciate any feedback, thanks!