Along with what others have said, different sound options would be great.
also, when you put a note down, it should make the sound it would normally make if you played the track. That way you don't have to play through the whole thing to see if you picked the right note.
Finally, an option that toggles off/on the keys (C,D,E,F,G,A,B,C,etc)
This game is bull. First of all, hard mode is impossible, being that you have everyone shooting you off-screen and it only takes a few hits to kill you later in the game. Yes, I realize that you can aim off-screen, but they're way outta there. This is my main gripe. What made me quit is when I finally get to the end of the game, blasted through some assholes that were shooting me off-screen like they always do, to find my ally telling me to follow him somewhere, where he leads himself into a colossal sized asshole, which then kills him. This happened about three times before I said, "!@%# it." I believe the game has potential, but damn, it needs some fixes.
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