G♯dim7

G♯1B♭3D♭5F♭♭7

Three minor thirds stacked. The seventh is doubly diminished, which is why it is written with a double flat.

Written the other way round it is A♭dim7 — the same twelve keys on a piano, a different piece of notation.

on guitar on piano the scale

What is true of it

G♯dim7 is G♯, B, D and F — 1, b3, b5 and bb7 counted from G♯.

The easiest of the 1 fingering below is 1212: 3 fingers, one of them barring the 1st fret, held at the 1st fret.

None of them uses an open string, so this chord moves up the neck unchanged — the same shape 1 fret higher is the chord a semitone above.

Where its notes are on the neck

Fig. 3 — first 12 frets

The brass dots are G♯, the root. Everything else is a chord tone with its degree printed in it.

With a different note underneath

first inversion

G♯dim7/B

4545

second inversion

G♯dim7/D

7878

third inversion

G♯dim7/F

abab

An inversion is the same chord with a different note lowest. The name changes to a slash name because the bass is what a listener hears as the foundation.

G♯ in other shapes

G♯7dominant seventh G♯maj7major seventh G♯m7minor seventh G♯major G♯mminor G♯dimdiminished

Cdim7 C♯dim7 D♭dim7 Ddim7 D♯dim7 E♭dim7 Edim7 Fdim7 all 374