1. Start from an automatic draft
Upload the song to the tool on this page (or play it near the microphone). In a few seconds you'll have the key, the tempo and a list of chords with the moment each one plays. It won't be perfect, but it saves you half the work.
2. Confirm the key
Listen for the note that feels like “home”, the one phrases resolve to. If the tool says G major, play a G chord at the end of a verse: if it fits and sounds final, you're on track. A major key and its relative minor (G and Em) share the same notes and are easy to mix up.
3. Follow the bass
The bass usually plays the note that names the chord. Tap a chord in the list to play the song from that point and hum the lowest note: if it matches, the chord is almost certainly right.
4. Choose between major and minor
Play both versions (for example D and Dm) along with the song. The one that doesn't clash is the right one.
5. Add the colours
Once you have the basic chords, add what automatic detection can't see: sevenths, ninths, suspended chords or a bass note other than the root (C/E, D/F♯…).
6. Move it to your key
If the song sits too high or too low for you, use “Transpose these chords” and pick the capo position that lets you play with comfortable shapes.
Frequently asked questions
Do I need to read music?
No. Knowing the basic chords on your instrument is enough.
Why does it sometimes show the wrong chord?
Detection compares the notes it hears with major and minor chords. Inversions, sevenths or a very loud melody can throw it off, which is why it's worth checking by ear.