The game is really fun! Tho, the controlls are really funky and I find it hard to coordinate my movements with the keybinds and the graphics levels, also in the music level the note blocks should have a more defined shape and shouldn't move as much as they move now, the idea of the game is really cool and it's well executed, but it needs some polishing!
Edit: And It's not really intuitive that some background images are way too similar to the places you can actually can walk on