Cm7♭5

C1E♭♭3G♭♭5B♭♭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

8988b8

moderate · barre

Fig. 3

x3434x

moderate · barre

Fig. 4

8988xx

moderate · barre

Fig. 5

89a8b8

hard · barre

Fig. 6

8988bb

hard · barre

What is true of it

Cm7♭5 is C, E♭, G♭ and B♭ — 1, b3, b5 and b7 counted from C.

These are also the notes of E♭m6/C and D♯m6/C. 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 8988b8: 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. 7 — first 12 frets

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

With a different note underneath

first inversion

Cm7♭5/E♭

xx1312

second inversion

Cm7♭5/G♭

2313xx

third inversion

Cm7♭5/B♭

x11312

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.

C in other shapes

C7dominant seventh Cmaj7major seventh Cm7minor seventh Cmajor Cmminor Cdimdiminished

C♯m7♭5 D♭m7♭5 Dm7♭5 D♯m7♭5 E♭m7♭5 Em7♭5 Fm7♭5 F♯m7♭5 all 374