Abm7b5 chord
Ab half-diminished 7th · also written G#m7b5
C4
Ab
Cb
C5
D
Gb
Want it in context? Open Abm7b5 on the full piano.
Notes
- AbR
- Cbb3
- Db5
- Gbb7
Formula: R – b3 – b5 – b7
Abm7b5 inversions
The same notes, with a different note in the bass.
Root position Abm7b5
C4
Ab
Cb
C5
D
Gb
1st inversion Abm7b5/Cb
C4
Cb
C5
D
Gb
Ab
2nd inversion Abm7b5/D
C5
D
Gb
Ab
Cb
C6
3rd inversion Abm7b5/Gb
C5
Gb
Ab
Cb
C6
D
More Ab chords
Half-diminished 7th chords in other keys
FAQ
What notes are in the Abm7b5 chord?
The Ab half-diminished 7th chord (Abm7b5) has 4 notes: Ab, Cb, D and Gb.
How do you play Abm7b5 on the piano?
Put your right hand on Ab, Cb, D and Gb, starting from Ab. A common fingering for three-note chords is thumb (1), middle finger (3) and little finger (5).
What is the formula of a half-diminished 7th chord?
R – b3 – b5 – b7 (in semitones from the root: 0, 3, 6, 10).
Is Abm7b5 the same as G#m7b5?
Yes. Ab and G# are the same key on the piano (enharmonic), so Abm7b5 and G#m7b5 sound the same.