A fresh spin on the theme "LOOP", I appreciate that it's not yet another "play my level again and again" kind of game.
However I wish there was more to the gameplay, and making a rhythm game relying on music for a web build can be dangerous (input and audio lag)...
I understand that yours doesn't, but then it makes the game off-putting ever so slightly.
The visual art leaves a bit to be desired, I know you were alone in this but consider teaming up with people that you trust and can do the art, or working on your artistic skills if you are so inclined to really do it on your own.
The game is very punishing, miss a beat and you're in trouble, it doesn't seem fair as this happens straight from the beginning as you are trying to get used to the game...
Overall a fresh game, but lacks a bit in quality.
Good luck!