Sorry for your confusion, some instructions would have been helpful but I ran out of time.
Your only goal is to build the town. When you create a building, you must play a rhythm game. You must click on the arrows when they are over the buttons. If you miss an arrow, you loose $1. You start with $100 and if you run out of money it is the Game Over (in fact nothing happen and you can continue to play and build if you don't miss any arrow).