Ab m7b5 Guitar Chord | Play, Hear and Practice Interactively
Want a structured chord roadmap instead of jumping between pages?
Go to the full guitar chords tutorial.
Spelled Ab, Cb, Ebb and Gb, Abm7b5 is the Ab half-diminished chord, with the root, minor third, flat five and minor seventh above its root. The pitches of Abm7b5 form the vii chord of A major and the ii chord of F# minor, where the same chord carries another spelling.
Melodies over Abm7b5 can draw on the Ab Aeolian b5 scale, which contains every note of the chord. The single voicing on this page spans fret 3 to fret 4.
A half-diminished chord is a diminished triad with a minor seventh on top, while the fully diminished seventh lowers that seventh by one more semitone. The player at the top adds a drum loop with a tempo you set, which is a simple way to play along and rehearse chord changes.
Ab minor 7th with flat 5th guitar chord is also written as Abm7b5, Abm7(b5), Abø7 or Abmin7b5. It is also known as the Ab half-diminished chord.
Ab m7b5 chord Notes:
Formula of the Minor Seventh Flat five chord:
Formula: 1 b3 b5 b7
Ab M7b5 Guitar Chord Diagrams
Position 1 Movable
Finger Positions
- Mute the A string
- Mute the high E string
- Place your index finger (1) on the fret 3 of the B string
- Place your middle finger (2) on the fret 4 of the low E string
- Place your ring finger (3) on the fret 4 of the D string
- Place your pinky finger (4) on the fret 4 of the G string
Find more shapes in our all guitar chords online library. If you
prefer a printable pdf, download
the Free Guitar Chords Chart Pdf
Created by
Giancarlo is a musician (teaching guitar since 2000), software engineer, AI consultant and published researcher
FAQ
Why is Abm7b5 spelled with Cb and Ebb?
Chord letters run A, C, E, G. The minor third on C is Cb, and the flat fifth on E is Ebb. These sound like B and D, but the spelling keeps the letters in order.
What notes are in the Abm7b5 chord?
Abm7b5 is spelled Ab, Cb, Ebb and Gb. These are the root, minor third, flat fifth and minor seventh. They sound like G#, B, D and F#.
Is Abm7b5 the same chord as G#m7b5?
Yes. Abm7b5 and G#m7b5 share the same pitches and sound identical. G#m7b5 uses plain sharps, so it is easier to read, but both mean the same chord.
Which scale fits Abm7b5?
The Ab Locrian scale, spelled Ab, Bbb, Cb, Db, Ebb, Fb, Gb, holds all four chord tones. Its pitches match a G# Locrian scale.
How many Abm7b5 voicings can be played?
There is 1 voicing, with no open string and no barre. It sits between fret 3 and fret 4.
