Sixteen steps, four drum sounds, no recordings anywhere — every kick, snare, hat and clap is built out of oscillators and noise the moment it fires. A pattern is already loaded: press Play, then start rewriting it.
Tap a pad to cycle it off → hit → accent, or drag across the row to paint several. Space plays, R randomizes, C clears, 1–4 mute a track. Inside the grid, arrow keys move and Enter toggles.
This browser has no Web Audio support, so the grid is silent — the sequencer still runs and the pattern still edits.