I have no rhythm and I must scream.
Can't speak to the musical part because I 'm terrible at music games even though I think they're cool.
What I can give useful info on is:
I liked the art! The first alien gave me Evangelion vibes.
with ABXY I could have sworn there was controller support. Would have like arrow keys or WASD to input combos instead if keyboard/mouse.
I'm looking forward to watching the stream of this game so I can see what it's supposed to be like.