Neon Web Audio Step Sequencer

🎹 How to use Chromatrack

A generative step sequencer — open in any browser, no install needed.

Getting Started

Row Controls (left side of grid)

Patterns & Generative Tools

Patterns 1–8 — switch patterns; switches happen at the next bar while playing.
Copy — click Copy then a destination pattern to duplicate.
Chain — auto-advance through patterns 1→2→3…
Song — arrange patterns with custom repeat counts.
Mutate — randomly evolve the current pattern.
Random — generate a sparse random pattern from scratch.
Transpose ▲▼ — shift pitch up/down in semitones.

Keyboard Shortcuts

Space Play / Stop

1–8 Select Pattern

M Mutate

R Random

F Fullscreen

H Help / Instructions

Ctrl+Z Undo

Ctrl+Shift+Z Redo

Shift+⌫ Clear

R-Click Step Lock

Sharing & Export