Hi, thanks for your comment!
I have to admit that I spent a good chunk of time thinking about how to deal damage to the player, in particular to deal damage when spamming keys. At first, I did not add a scoring system, the goal was just to clear the stage, so I wanted to prevent spamming keys as a way to clear the stage effortlessy.
But then I added the score, and I could not decide what to do with that mechanic. At the end, I decided to leave it there because I thought that it takes away half the difficulty, eliminating the need to follow the notes. But I should think about it some more.
Congrats for your 93%! Means you are not bad at all at the game! :)