- Grid: click cells to toggle drum hits or bass notes.
- Play / Stop: the Play button is a toggle.
- Spacebar: toggles Play / Stop when you're not typing in an input.
- Rec: while playing, use Numpad 1–9 to record drum hits.
- Undo / Redo: CTRL/Cmd + Z / CTRL/Cmd + Y.
- Mixer overlay: press V or M.
- Settings overlay: press S.
- Song Mode: double-click a song row to load it into the editor.
- Auto-save: project state is stored in localStorage.
- MIDI import: imports drum notes and bass notes.