Some of you may already know about this, but if you hold down the A6 note, you'll hear someone whisper something. People think it sounds like "Don't Kill Us" or "Incubus", but it's actually an easter egg the developers left in there. It's just a japanese dude saying something in japanese which means "okay, next one" or "okay, onto the next note". A developer at Piato cleared that up. Check it out on YouTube. It creeped me out at first but then I realized what it really was.