Fig 1Keyboard synthesizer
Hold the keys · it playssaw · oct 4 · silent

Notes: A S D F G H J K L ; ' \ for the white keys (C up to G), W E T Y U O P ] for the black. Waveform: 1–4. Octave: Z down, X up. Metronome: M, tempo - = (or drag the knob up and down; a click adds 10). Scale: N next, B back. Hold several keys for a chord, or drag across the keys.

Things to try: play the white keys from C to the next C (A to K) and read the step trail: 2-2-1-2-2-2-1, the major-scale pattern. Then start on G (G) and follow the same pattern up: one step lands on a black key, F♯. Press SCALE twice to check against G major. Hold C-E-G (A D G) and the screen says C major; swap E for E♭ (E instead of D) and it turns to C minor: the middle note dropped one half-step. Finally start the metronome at 80 bpm and change chords every four clicks, C, G, Am, F: the four dots under BEAT show where you are in the bar.