D♯dim7

D♯1F♯♭3A♭5C♭♭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 E♭dim7 — the same twelve keys on a piano, a different piece of notation.

on guitar on piano the scale

What is true of it

D♯dim7 is D♯, F♯, A and C — 1, b3, b5 and bb7 counted from D♯.

The easiest of the 1 fingering below is 8989: 3 fingers, one of them barring the 8th fret, held at the 8th 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 D♯, the root. Everything else is a chord tone with its degree printed in it.

With a different note underneath

first inversion

D♯dim7/F♯

bcbc

second inversion

D♯dim7/A

2323

third inversion

D♯dim7/C

5320

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.

D♯ in other shapes

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

Cdim7 C♯dim7 D♭dim7 Ddim7 Edim7 Fdim7 F♯dim7 G♭dim7 all 374