Song sketchpad
A one-loop sketch: each chord holds one bar, and the drum grid repeats under every bar. Edit either while it plays; changes land the next time around.
The chords
One bar each, in order. Leave the loop empty for a drums-only groove.
The beat
Sixteen steps, one bar: each cell is a sixteenth note. Tap cells on or off, even mid-loop.
Playback
Loop
Tempo
Swing
Eighth pairs play long then short. The grid stays even.