Cool rhythm game, even if I'm not a good at rhythm ^^"
The gameplay is very accurate, and the music gives a real tension!
Just a little note, my antivirus software blocked your game, because it detected that your game tried to modify "save_data.txt". Of course I unlocked the game in order to play it, but it was just to warn you about that, I don't know if you knew this issue.
Overall, good work!