G♭ Major 7th (♭5)
::
G♭
B♭
C
F
E
B
G
D
A
E
7
♭5
3
7
G♭
G♭
⬤
3
7
♭5
⬤
G♭
⬤
♭5
⬤
3
7
3
⬤
G♭
⬤
♭5
3
7
♭5
⬤
G♭
⬤
7
♭5
3
G♭
⬤ ⬤
⬤ ⬤