A clever concept! Mixing Osu/EBA with shmups (two of my favorite genres), it's pretty cool.
Two main issues though: the first is when the player gets out of sync, it's hard to recover and getting back into action. The second is that there's so many stuff going on everywhere that the game suffers from intense lag. :p It became un playable at a certain point on my machine, which is sad because I'm sure I could enjoy this kind of fast action.
Even so, the game is ambitious, and has a perfect synchronization of ennemies and lasers and everything else. It's at least an incredible show!