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