The orchestra plays. Arrows fly toward you in time with the music. Conduct them.
FlickWhen an arrow fills its circle, flick your hand the way it points. Your hand can be anywhere; only direction and timing count.
TimingHit it on the beat and it turns green. Miss it and it turns red, and the melody drops out.
Two handsOne arrow needs one hand. Two arrows at once need both hands.
HoldOn a long note, raise a hand with the palm turned up and keep it there until the ring completes. Anywhere on screen. With the mouse, hold the button down.
ChopFor a big punchy hit, a CHOP blade appears. Chop your hand down hard, anywhere on screen, and the drums, brass or strings answer.
Press P to pause. Your camera video stays on this computer.