CREATE → MUSIC / POWERED BY BEEPBOX
Your next melody.
A file you can keep.
Compose a beat or tune with a mature open-source music editor, directly on this site. Export WAV audio to use in your own project and JSON to reopen and revise.
No subscription. No account. No upload. BeepBox 4.2.2 by John Nesky and contributors, hosted here with a local-only adaptation. Start with a low speaker volume.
1. Make a pattern
Open the studio. Click the gray note grid to add notes. Drag a note sideways to change its length. Press Play to hear your work.
2. Keep the editable song
Choose File → Export Song → .json. Click Export, then the download link below the studio. To check it, open this page in a fresh tab, open the studio and use “Reopen an editable BeepBox JSON song” above the editor.
3. Take the audio
Export again as .wav. Choose a loop count, click Export, wait, then Save File. Use the download link below the studio. Listen to the downloaded audio before using it.
Open the studio
Work stays in memory in an isolated editor. Closing or reloading clears the song, undo history and preferences. Download JSON before leaving. WAV is rendered audio; it cannot restore the editable notes.
Your editor loads only when you open it.
Import replaces the active song. Download your current JSON first. No file is uploaded.
Choose a saved JSON file, up to 2 MB.
COMPARE THE TASK, NOT THE LOGO
Do you need a paid DAW for this idea?
For sketching pattern-based melodies or beats and exporting a WAV, BeepBox covers a small part of a music-making workflow also found in FL Studio. Try it before buying software just for that task.
- Here: multiple synthesized instrument channels, editable notes and patterns, tempo, built-in sound controls, undo/redo, and local WAV, MIDI and JSON exports.
- Not a full DAW: no audio-recording studio, third-party VST plugins, FL project compatibility, advanced mixing/mastering suite or collaborative cloud workspace.
- No savings guarantee: existing free tools may already meet your needs. This does not establish savings if you already own a DAW or need its other capabilities.
Official documentation reviewed 7 November 2026: FL Studio patterns · audio export. Feature overlap, not a quality or performance comparison.
Privacy, limits and rights
- The local edition removes remote fonts, MP3 downloads, URL sharing/shorteners, automatic service workers and MIDI-device access. It uses in-memory storage, not shared Hub storage or automatic backups.
- No microphone, camera or account is needed. Standard browser audio starts after your interaction. The website host still serves page files normally.
- Use original music or material you have rights to use. BeepBox does not claim ownership of your songs; software licensing does not clear a copied melody.
- Large songs and audio exports can exhaust browser memory. Start with a short loop. Sound, performance and layout vary by browser/device.
- This is BeepBox with documented hosting changes, not a fork promising every upstream feature. No MIDI import, MP3, URL sharing, standalone HTML song-player or persistent recovery in this edition.
Download source and adaptation (ZIP) · MIT licenses and credits · Build and test notes · Official BeepBox release
Desktop workflow checks and limitations are recorded with the release. This is not real-beginner, screen-reader, physical-mobile or security certification.