Play the notes in time to excite the public and bring it to a climax. But if you fail a note or play it out of time, they will lose their interest and you will be booed! Try to not lose a note or play it out of time to pass to the next level.
You use 7 keys of the keyboard to play: A, S, D; J, K, L; and the space bar. It's about pressing at the right time. If you do it too early you'll see a red light and if it's in time a green light, but if you do it too late you'll lose.