Interesting take on "turn-base," using each beat as a turn! I like it. The pixel art graphics are great, and the music and SFX work well.
I have to admit, I'm not very good at rhythm games to begin with, and without visual cues I did pretty poorly. Every now and again I'd hit the groove at it was fun! My highscore was 2876, and it looked like I got about 1/4 of the planet terraformed.
Nice work!