The A half-diminished chord (Am7b5) is made of the notes A, C, Eb and G. It is built from the root A with a minor third, a diminished fifth and a minor seventh.
The half-diminished chord (m7b5) is the second-degree chord of minor keys; very common in jazz.
A half-diminished
Notes: A – C – Eb – G
Guitar — positions on the neck
Piano — root position and inversions
Fingerings and positions
On guitar, this chord can be played in 4 ways along the neck. It is most often played with a barre. Example fingering (from the low E string to the high E string, x = muted string): x0101x. On piano, the right hand plays 4 notes, in root position or in an inversion.
Notes and intervals
Note
Interval
A
root
C
minor third
Eb
diminished fifth
G
minor seventh
In which keys? The A half-diminished chord is the viiø7 of Bb major and the iiø7 of G minor.
What are the notes of the A half-diminished chord?
The notes of the A half-diminished chord (Am7b5) are A, C, Eb and G.
How do you play the A half-diminished chord on guitar?
On guitar, this chord can be played in 4 ways along the neck. It is most often played with a barre. Example fingering (from the low E string to the high E string, x = muted string): x0101x.
How is the A half-diminished chord built?
The A half-diminished chord (Am7b5) is made of the notes A, C, Eb and G. It is built from the root A with a minor third, a diminished fifth and a minor seventh.