I like the idea of the game a lot! And the music is pretty nice, but i think the notes should spawn a bit earlier, so that you have more time to react, and i think that notes that require different keys should be colored differently or have different shapes so that it's easier to tell them apart quicker. I got a 93% accuracy on the easy mode but the game is practically impossible on hard mode. Also i think the song dragged on just a bit too long but that's not a big issue.