A few points of feedback: - The keys you have to press are only shown once you press them, requiring trial and error unless you look at How To Play first. - It feels weird to me to press keys that are far apart to hit notes that are visually close together. - It needs a timing offset to sync the music to the gameplay. I had to purposefully delay my presses, or... play without music, which immediately improved my accuracy (49% -> 73%)