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A♭ Half-Diminished Chord (A♭m7♭5)

Notes: A♭, C♭, E𝄫, G♭. Tap any diagram to hear it.

A♭m7♭5
Notes
A♭C♭E𝄫G♭
Formula
1 – ♭3 – ♭5 – ♭7

A♭m7♭5 on guitar

Fret 4 · most common
4-5-4-4-7-4
Open position
4-2-0-1-0-2
Fret 9
x-11-9-11-9-10

Strings from low (left) to high (right). Numbers are fingers: 1 index, 2 middle, 3 ring, 4 pinky. × = don’t play, ○ = open string.

A♭m7♭5 on ukulele

Fret 1 · most common
1-2-2-2
Fret 4
4-6-4-5
Fret 7
7-8-7-9

A♭m7♭5 on piano

Other A♭ chords

A♭A♭mA♭7A♭maj7A♭m7A♭sus2A♭sus4A♭dimA♭augA♭6A♭m6A♭9A♭add9A♭7sus4A♭dim7

Half-Diminished chords in other keys

Cm7♭5C♯m7♭5Dm7♭5E♭m7♭5Em7♭5Fm7♭5F♯m7♭5Gm7♭5Am7♭5B♭m7♭5Bm7♭5

About the A♭ Half-Diminished chord

Half-diminished chords (minor seven flat five) are the ii chord of minor keys and a staple of jazz progressions. A♭m7♭5 is built from the root (A♭), minor third (C♭), diminished fifth (E𝄫), minor seventh (G♭).

Frequently asked questions

What notes are in the A♭ Half-Diminished chord?

The A♭m7♭5 chord is made of A♭, C♭, E𝄫, G♭: the root, minor third, diminished fifth, minor seventh.

How do you play A♭m7♭5 on guitar?

The most common fingering is 4-5-4-4-7-4, from the low E string to the high E string (x = don’t play that string, 0 = open string). It uses a barre at fret 4.

How do you play A♭m7♭5 on piano?

Press A♭, C♭, E𝄫, G♭ together. In root position the lowest note is A♭.