Adim7

A1C♭3E♭♭5G♭♭♭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

x01212

moderate

Fig. 3

x04545

moderate

Fig. 4

50454x

moderate

Fig. 5

x0454x

easy

Fig. 6

x04542

hard

What is true of it

Adim7 is A, C, E♭ and G♭ — 1, b3, b5 and bb7 counted from A.

The easiest of the 5 fingerings below is x01212: 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.

1 string stays silent.

Where its notes are on the neck

Fig. 7 — first 12 frets

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

With a different note underneath

first inversion

Adim7/C

x3424x

second inversion

Adim7/E♭

xx1212

third inversion

Adim7/G♭

20121x

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.

A in other shapes

A7dominant seventh Amaj7major seventh Am7minor seventh Amajor Amminor Adimdiminished

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