Click in the note grid to add or remove pitches, drag horizontally to adjust note length, and use the numbered boxes below to arrange patterns across melody and drum channels. Drag the purple loop bar to repeat specific sections.
URL Saving & 3D Spectrogram: Your entire song lives in the browser URL hash and updates automatically as you edit. Click 🌊 Open in 3D Spectrogram above to inspect your arrangement on a live 3D frequency terrain, or bookmark/share the URL anytime.
Shortcuts: Space Play/Pause • Z / Y Undo/Redo • C / V Copy/Paste pattern • 0–9 Assign pattern • Arrows Move selection • [ ] Move playhead
Powered by BeepBox, created by John Nesky (MIT License). 3D spectrogram inspired by Chrome Music Lab.