Great work!! A few suggestions; make the high notes red for attacks and the low notes blue for movement, and sync the colour of our avatar with them. It was difficult for me to glance back and forth so I think it would help keep track of what comes next. during some sections of the song I found I could get stuck at the bottom of the screen. Perhaps have a very limited control for boosting outside of the rhythm, or make the avatar a little bouncier at the bottom? Not 100% sure. Anyway great job thanks for putting this up for us to enjoy!
I agree with DavoidZX. It is a rhythm game and the patterns do repeat. Plus, at the start of each level theres a full 4 (or 8 depending on the level) bar period before the hexagon appears so you know what the beat is, AND the 3rd level already demonstrates that idea perfectly and shows how you beat is incorporated every 8th bar so you know whats coming up.
Anyway, yes, DavoidZX is right, because this is primarily a rhythm game, and having to depend on just your eyes and not your eyes AND your ears is probably not the best of things to do.