A pocket-sized pattern playground

Pulse Grid

Forge a loop from drums, bass, chords, and sparks. Every sound is synthesized in your browser.

Loop energy 0 Place your first beat

How to play

Tap cells to place notes. Press Space to play or pause, R to spark a pattern, and 1–4 to mute tracks.

Forge goal

Build a loop with at least 12 notes across all four tracks.

Local memory

Your pattern and best loop energy stay in this browser only.

Adapted from the multi-channel pattern-sequencer concept in BeepBox by John Nesky (MIT). This compact edition uses original UI and procedural audio.