Interesting concept, but it was super unforgiving lol. I think more work needed to be done on the generation patterns for the bullets as there were a ton of times when going in the wrong direction led to death because the precision required to move between the bullets was pretty insane.
I think it might've been better if every bullet that passed out the bottom increased your score, with the grazing mechanic adding an extra set of points (or maybe a combo multiplier). Some bullets going faster than others would've also added an interesting spin on the mechanic (or even bullets that moved between lanes). Also, even if you manually timed the BPM and used that timing for generation or something, it would've added a lot to the game (and more SFX, lol, there was very little feedback for the player).
Overall, a commendable effort for the jam =D