This was a fun entry! I'm still humming the song as I type this. The Z control was definitely not intuitive for me (maybe it's a normal thing for this genre to have a control for state change?) I'm also not great with reflex-based games, but I had fun trying to make it through the whole way!

If there were health pickups worth navigating the bullets for, and bullets didn't instakill you but lowered your health, it might solve your "easier by just slowly circling" gameplay feature. I agree with others that the immediate restart is frustrating.

I love the concept! Having bullets forming this choreography, instruments represented in different shapes… It's really beautiful, and fun to play!

However one thing I'm really not fan is the instant death. I've found the act of repeating the beginning of the song quite frustrating, and in the end haven't been able to complete the game. The beginning is also punitive very early: the two waves are pretty difficult to dodge, and the dash more than often throw into another bullet. I enjoy difficulty, but it doesn't always have to be punitive.

But this choice aside, it's still a really good game! I enjoyed getting as far as I could.

I think the game is fun and creative. I like the visuals and the music/background noise, it adds a really good environment sensation and the control feels nice and smooth. Good luck with your submission. 

Clever idea! I included it in my Music Game Jam compilation video series, if you’d like to take a look :)

As a few people have said, you can generally avoid most of the bullets by slowly circling the center. The beginning green wave was clever though! I think you should do more patterns that make use of the invulnerability.

Almost hypnotic!  Really fun! Nice work! :D