MIDI editor

Music sketchbook

From the open-source project Signal

Hear every note the moment you write it, and fix what sounds off right away.

Make it mineTry it (opens the authors’ own copy in a new tab)

“Make it mine” asks you to sign in first. On the Free plan, your copy is your one app; you can delete it any time.
“Try it” opens the authors’ own copy, not yours.

Made by
ryohey
Licence
MIT
Popularity
2.4k stars on GitHub
Uses
Your browser

What you can do

  • Draw notes on a grid beside the piano keys
  • Put each instrument on its own track
  • Save your song as a MIDI file

Who it’s forHobby composers who want to get song ideas down fast

Once it’s yours

  • Your own copy, at its own address
  • Anyone with its address can open it, until you choose who can
  • Change it with your own coding agent

Ideas for changing it

Once it’s live, give any line below to your coding agent.

  • Start each new song with piano, bass and drum tracks

  • Add a chord button: pick a chord and its notes fill in

  • Make the note grid easier to tap on a tablet

Source and licence

It comes from the open-source project Signal: its authors, ryohey, published the code for anyone to use and change. Its licence covers the code, not the name, so the copy on Tofu goes by a plain name.

Its licence, MIT, lets you use and change it freely, as long as you keep the authors’ copyright notice.

Your copy is the version you copied; the authors’ later updates don’t arrive by themselves.

This version on TofuThe authors’ original code

More like this

All templates