Cute game! But I think the controls need changing. Really difficult to keep in rhythm when you need to move up and down on the arrow keys so much. I think it would be better if you aimed at the bamboo using the mouse, then all focus of the rhythm would be on the left hand.
Reminds me a lot of rhythm heaven, so maybe even doing swipes with the mouse at the bamboo instead of pressing keys could have been even better!
Presentation and audio is great, although there was a slight desync between the visual and audio when playing the game.