Plug in a MIDI device, click "New Synth", and start playing.

New synth Render notes Edit mode toggle

right hand

[V: PianoRightHand]|

left hand

[V: PianoLeftHand]|

header

X:1 T:Song title L:1/4 %%staves {(PianoRightHand) (PianoLeftHand)} V:PianoRightHand clef=treble V:PianoLeftHand clef=bass K:Ab