It's a really cool concept, but having to restart the level after colliding with a wall is too punishing, especially since the controls are kinda "floaty"; if you just tap a button, the wheel still moves quite a bit before stopping, so it's hard to be precise. It could still be challenging to get to the levels if the walls were collisions, and it'd be more of a "figure out how to get to the end" than "be super precise or die" game. The death SFX is amazing tho~ And the piano level idea gave me a smile when I first stepped on a note.