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Guitar chord · Half-Diminished (m7♭5)

Abm7b5 chord (Ab Half-Diminished (m7♭5))

Essential bridge chord on the ii degree of minor ii-V-I jazz progressions.

Notes AbCbDGb
Formula 1 ♭3 ♭5 ♭7
Shapes 2 on this page

Abm7b5 chord shapes

Tap a diagram to strum it. Numbers are fingers: 1 index, 2 middle, 3 ring, 4 pinky. Blue dots are the root, Ab.

5th String Root Voicing x 11 12 11 12 x
6th String Root Voicing 4 x 4 4 3 x

Interactive chord diagram

Abm7b5 on the fretboard

STR OP 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 E A D G B E ✕ ✕ ✕ ✕

Tap any note to hear it.

Scales to play over Abm7b5

These scales start on Ab and contain every note of the chord, so they fit when Abm7b5 is the chord of the moment.

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Questions

What notes are in a Abm7b5 chord?
Abm7b5 is Ab, Cb, D, Gb: the 1, ♭3, ♭5, ♭7 of Ab.
How do you play Abm7b5 on guitar?
5th String Root Voicing: x 11 12 11 12 x; 6th String Root Voicing: 4 x 4 4 3 x (low E to high E, x = don't play the string).
What scale goes with Abm7b5?
Scales on Ab that contain every note of Abm7b5: Ab Blues, Ab Locrian, Ab Altered, Ab Half-Whole Diminished, Ab Locrian Natural 2, Ab Locrian Natural 6.

Half-Diminished (m7♭5) chords in every key

More Ab chords