Didn't see this anyplace else on the forums. By accident, I've found that you can play extra notes in songs. As long as you begin on the right note and end on the right note, you can play up to two extra notes, even ones that aren't in the song, and the song will still activate successfully. Three notes won't work. This isn't game breaking since the songs still work, but it does detract from the play experience a bit.
