Oooooh I like this, I like this a lot actually.
Did need to back out to look at the tutorial, because I chose to ignore the how to play the first time ^^' but once I knew what I was doing this is very nice and very wholesome.
I actually haven't seen a game like this before, I expected something like the good old punk-o-matic where you get to play the songs, but instead you get to be a member of the audience cheering on the performers, and that's very sweet. It's for sure an idea with an untapped potential could be really, really cool as a real game if expanded upon.
But it's an awesome jam game for sure, love it