🥁 16-Step Drum Sequencer

One bar of sixteenth notes in 4/4 — synthesized live with the Web Audio API. No audio files.

Ready — press Play to hear the pattern.

BPM 120 BPM

Step

Click / tap a step to toggle it. Edits take effect on the next pass without restarting. Steps are grouped in beats of 4.

Audio is unlocked on the Play gesture (browsers require a user interaction). Stop cancels scheduled hits and returns the playhead to step 1. Clear removes every step; starting again always uses the pattern currently shown.