F♯dim7

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

on ukulele on piano the scale

Every fingering that fits a hand

Fig. 2

20121x

moderate

Fig. 3

20454x

hard

Fig. 4

234242

hard · barre

Fig. 5

2312xx

hard

Fig. 6

23424x

hard · barre

What is true of it

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

The easiest of the 5 fingerings below is 20121x: 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.

1 string stays silent.

Where its notes are on the neck

Fig. 7 — first 12 frets

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

With a different note underneath

first inversion

F♯dim7/A

x01212

second inversion

F♯dim7/C

x3424x

third inversion

F♯dim7/E♭

xx1212

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.

F♯ in other shapes

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

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