G♭ Diminished 7th
::
G♭
A
C
E♭
⨉
A
E
C
G
♭3
♭5
G♭
♭3
⬤
♭5
𝄫7
⬤
⬤
♭3
♭5
⬤
𝄫7
G♭
⬤
⬤
♭5
𝄫7
⬤
G♭
♭3
⬤
𝄫7
G♭
⬤ ⬤
♭3
♭5
⬤ ⬤
—
B♭ Dominant 7th (♭5)
::
B♭
D
E
A♭
⨉
A
E
C
G
♭5
B♭
♭7
3
⬤
B♭
⬤
♭7
♭5
⬤
3
⬤
B♭
⬤
♭5
3
⬤
♭7
⬤
♭5
⬤
3
B♭
♭7
⬤ ⬤
♭5
⬤ ⬤