G♭ Dominant 7th
::
G♭
B♭
D♭
F♭
E
B
G
D
A
E
♭7
♭7
3
G♭
5
♭7
G♭
⬤
3
⬤
G♭
5
⬤
♭7
⬤
3
5
3
⬤
G♭
♭7
⬤
3
⬤
5
♭7
G♭
5
⬤
3
G♭
5
⬤ ⬤
♭7
♭7
⬤ ⬤