Anyone know how to actually use it? I've had it installed for ages, every once and a little while I open it up, and then stare at the screen for a minute, have no idea what to do, and then close it. I got no idea how to start. There's some videos, but the thing is there is some way to create it by picking instruments and then voice level (high or low voice), and then just pull lines with it. I never found a way to get to doing it!