A♭ Half Diminished 7th
::
A♭
B
D
G♭
E
B
G
D
A
E
♭3
♭5
A♭
♭7
♭3
♭7
⬤
♭5
⬤
A♭
♭3
♭7
A♭
⬤
♭5
⬤
A♭
⬤
♭3
♭7
♭5
♭3
⬤
⬤
A♭
♭3
♭7
⬤
♭5
♭5
♭7
A♭
⬤ ⬤
♭3
♭5
⬤ ⬤