Every square is a note in your key, so nothing you touch is wrong. Turn on the Groove, then touch high in a square for “ah” and low for “ooh” — drag up and down while holding to make the talk box talk. Slide sideways and it sings the next syllable. Play a line and stop — the background singers answer on the beat. Chord buttons play lush 9ths and minor 11ths. Tap Lead Me and it calls first.