Gdim7

G1B♭♭3D♭♭5F♭♭♭7

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

on ukulele on piano the scale

Every fingering that fits a hand

Fig. 2

312020

moderate

Fig. 3

31202x

moderate

Fig. 4

345350

hard · barre

Fig. 5

xx5320

easy

Fig. 6

345353

hard · barre

What is true of it

Gdim7 is G, B♭, D♭ and F♭ — 1, b3, b5 and bb7 counted from G.

The easiest of the 5 fingerings below is 312020: 4 fingers, 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.

2 of the 5 need a barre.

Where its notes are on the neck

Fig. 7 — 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

Gdim7/B♭

x12020

second inversion

Gdim7/D♭

x45350

third inversion

Gdim7/F♭

012020

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

G7dominant seventh Gmaj7major seventh Gm7minor seventh Gmajor Gmminor Gdimdiminished

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