Fm7♭5

F1A♭♭3C♭♭5E♭♭7

A diminished triad with a minor seventh rather than a diminished one — half diminished, and not the same chord as dim7.

on ukulele on piano the scale

Every fingering that fits a hand

Fig. 2

12110x

moderate · barre

Fig. 3

121104

moderate · barre

Fig. 4

121141

moderate · barre

Fig. 5

1211xx

moderate · barre

Fig. 6

121404

hard · barre

What is true of it

Fm7♭5 is F, A♭, C♭ and E♭ — 1, b3, b5 and b7 counted from F.

These are also the notes of A♭m6/F and G♯m6/F. Which name is right depends on what is underneath and what came before — the notes alone do not decide.

The easiest of the 5 fingerings below is 12110x: 2 fingers, one of them barring the 1st fret, 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 F, the root. Everything else is a chord tone with its degree printed in it.

With a different note underneath

first inversion

Fm7♭5/A♭

46340x

second inversion

Fm7♭5/C♭

x21101

third inversion

Fm7♭5/E♭

xx1101

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

F7dominant seventh Fmaj7major seventh Fm7minor seventh Fmajor Fmminor Fdimdiminished

Cm7♭5 C♯m7♭5 D♭m7♭5 Dm7♭5 D♯m7♭5 E♭m7♭5 Em7♭5 F♯m7♭5 all 374