Play any chord online — or get the chords from any MP3
Tap a chord and hear it, with its notes and its guitar, piano and ukulele shapes. Stack a few into a sequence and loop them at any tempo. Free, no signup, and it never leaves your browser — and when you want the chords of a song you already have, upload it and we'll find them for you.
Pick a chord
Tap a root, then a quality — it plays straight away. Nothing sounds until you press something.
Your sequence
Add chords above to build a sequence — it loops one bar per chord.
Playing chords you already know? Upload a song and ChordSonic works out the chords, key and tempo of the recording itself — then you can play along with them here.
Pick a chord, hear it
Choose a root and a quality — major, minor, 7ths, sus2, sus4, 6ths, diminished, augmented. It sounds the moment you click, and the panel spells out exactly which notes are in it.
See how it's played
Every chord comes with its shapes: fretboard grips for guitar and ukulele, keys for piano. The same diagrams you get while a real track is playing, so a chord looks the same wherever you meet it.
Build a sequence, loop it
Add chords one at a time, reorder them, and play the lot back as a loop — one bar each, at whatever tempo you're practising to. Export it as MIDI when you want to keep it.
A reference instrument, not a studio.
This page answers one question well: what does this chord sound like, and how do I play it? It won't record you, it won't master anything, and it has no track to open — it's the chord reference you keep open in a second tab while you work.
The chords here are the ones you chose. The harder job — naming the chords in a recording you did not write — is what the rest of ChordSonic does: upload an MP3 or WAV and our pipeline returns the key, the tempo and every chord change on a timeline.
Related: build a progression in a key · circle of fifths · every guitar shape · every piano inversion
Chord player FAQ
What is a chord player?
It's a reference instrument you play with your eyes and ears rather than your hands: you pick a chord — say F♯m7 — and hear exactly how it sounds, with the notes it contains and the shapes for playing it on guitar, piano or ukulele. Stack a few chords and it loops them back so you can hear how they move into each other.
Is this chord player online and free?
Yes. It runs entirely in your browser with no signup, no account and nothing to install. The sound is generated on your device, so nothing you play is uploaded anywhere.
Does it work as a piano chord player and a guitar chord player?
Both, plus ukulele. Every chord you select shows its fingering — the fretboard grips for guitar and ukulele, the keys for piano — next to the notes it's built from. The sound itself has three voices: electric piano, acoustic guitar and a warm pad.
Which chords can I play?
All twelve roots across thirteen qualities: major, minor, dominant 7th, major 7th, minor 7th, 6th, minor 6th, sus2, sus4, diminished, diminished 7th, half-diminished (m7♭5) and augmented. That's 156 chords, each one spelled out note by note.
Can I export what I build?
Yes — Download .mid saves your sequence as a standard MIDI file at the tempo you set, ready to drop into any DAW. You can also copy the chord names as plain text.
Can it tell me the chords of a song I already have?
That's the other half of ChordSonic, and it's a different job: this page plays chords you choose, while an upload gets the chords out of a recording. Upload an MP3 or WAV and our pipeline works out the key, the tempo and every chord change, laid out on a timeline you can play along to.
Why does nothing play when the page loads?
By design, and browsers insist on it too: audio only starts after you interact with the page. Tap any chord button and the sound engine starts up on that click.
Now get the chords from a real song.
Upload an MP3 or WAV and ChordSonic detects every chord change automatically — key, tempo and the full progression on a timeline you can play along with.
Analyze a track