I remember playing the early builds of this game and while I'm no better at using both of my hands in a rythm horror game, but I love the game even more now anyway! I haven't beaten story mode yet, but I'm practicing. I never was good on the piano.
In response to other feedback we've been getting, I will soon be implementing a no-fail "practice" mode where you can try all the songs out without any horror effects. Maybe that will help!