Auto: pads play drums, keys play piano — both record together. Press Record to capture.
Open the sunzustudio Studio and program a beat (drums, perc FX, bass, synth).
Press Input to drop a clip. Drag to move, drag the edges to resize, double-click a clip to delete or move it to another pattern. Shortcuts: Ctrl+C / X / V copy, cut, paste; S splits the selected clip at the mouse bar. M/S mutes or solos a track.
Each clip plays its beat for its length in bars. Record a VOCAL take, paint where it layers, then Play.