G Phrygian

The G Phrygian mode — G Ab Bb C D Eb F — shown across the guitar neck.

Swipe the neck sideways to see the higher frets.

G Phrygian is the natural minor with one note changed — the b2, Ab. That single note is what the mode sounds like; lean on it and the colour is obvious, avoid it and you are just playing minor.

The tool shows this from its parent key, Eb major, with G marked as where Phrygian begins, the same seven notes centered on Eb.