This is one of the coolest rhythm game ideas out there and the execution is already pretty good as well. The things I'd say had some problems are:
1. That you can't change the keybinds (I used autohotkey and was happy, but that's obv not a permanent solution '^^)
2. The way the calibration works is kind of weird. I play on 120ms and I hit at the correct timing for the beat, I do get the points as well, but the visuals seem to not be calibrated as well, meaning the blocks almost reach me when I hit them with near perfect timing.
Again, awesome game though, thanks for making this and keep it up! <3