Adim

Adim is A, C and Eb, a diminished triad. The shape this page opens on is written x0121x, lowest string first.

Also written A°, Ao or A diminished. The same chord either way; which spelling you meet depends on who wrote the chart.

There are 5 common shapes for Adim on the guitar, and 47 derived voicings in the triad family.

In which keys. Every note of Adim belongs to G minor (the ii°) and Bb major (the vii°).

The common shapes, written lowest string first: x0121x, 53x54x, xx78x8, x-12-10-x-10-11, x-12-13-14-13-x.

Triad. Three notes across one string set. Adim has x312xx, xx121x, x0121x, x3121x, xxx545, x675xx, 5675xx, 867xxx.

Tensions. A shell of Adim, root, third and seventh, leaves a string free, and the tones that belong over it are the 11 (D) and the b13 (F).

The common shapes and the derived voicings come from different places, and both are explained in where the chords and the theory come from.