This was really interesting. I found it very disorienting with the rotation so it was hard to make progress through the levels but trying to time it to the beat also was fun :) I definitely think it needs some kind of feedback about why you are losing lives (i know it's because of missing beats, but it was hard to tell when exactly i was missing a beat). It might be a little easier to make it be on every other beat, as it got stressful very quickly :)
I really liked the music and the artstyle though! Nice work!