Adim

A1C♭3E♭♭5

Two minor thirds stacked. The fifth is diminished, so it cannot be dropped without losing the chord.

on guitar on piano the scale

Every fingering that fits a hand

Fig. 2

2353

moderate

Fig. 3

x986

easy

What is true of it

Adim is A, C and E♭ — 1, b3 and b5 counted from A.

The easiest of the 2 fingerings below is 2353: 4 fingers, held at the 2nd 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. 4 — 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

Adim/C

5350

second inversion

Adim/E♭

x353

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

Amajor Amminor Aaugaugmented A5power chord Asus2suspended second Asus4suspended fourth

Cdim C♯dim D♭dim Ddim D♯dim E♭dim Edim Fdim all 374