ChordJoy is a free chord instrument in your browser.
Open a public-domain song, play the chords on the pad, or let auto-play accompany you.
Tap a chord to hear it. Auto-play can run the chart while you sing.
Every song transposes. Pick a key that sits in your voice.
Patterns are common chord moves. They are not the chart of a recorded hit.
Listening and playing run on this device. There is no account, and audio is not uploaded.
The Songbook is public-domain music with this app’s own simplest singable chords. No lyrics.
Pages never include lyrics. You bring the words you already know.
Guitar, ukulele and piano diagrams sit on each song page, next to the chords.
The pad shows the chords in order. The highlighted one is the one to play now.
A chord chart sits on every song page, as a table you can read without JavaScript.
Key pages list the diatonic chords and the public-domain songs written there.
A service worker keeps the app files so the instrument can open again offline.
The app does not claim to hear every song. Unsure chords are marked as unsure.
Songs you save stay in this browser. Export a JSON backup if you want a copy.
There is no account and no fee. Open the site and play.
Catch, in Settings → Lab, is experimental. On iPhone, playback stops when the screen locks.
Catch the chords. Play the song.