How to play. Each level is Learn, then Practice, then Drill. Shoot the glowing invaders on the piano by click, tap, or the keys A W S E D F T G Y H U J K (Shift for the upper octave).
No sound? Tap anywhere once to start it. On an iPhone the silent switch must be off, it mutes the game. Running but silent means the phone's silent switch or volume. sound: not started
Stars. One for a pass, two for 85 percent accuracy, three for flawless or a fast, accurate run. Bonuses need accuracy; the bar fills on real hits only.