Db7b5 chord
Db dominant seventh flat five
<
1 / 8
>
G
Gb
Gb5
Ab
A
Bb
B
C
Db
D
Eb
E
F
Gb
G
G
C
C
Db1
D
Eb
E
F
Gb
G
Ab
A
Bb
B
C
Db
E
Eb
E
F3
Gb
G
Ab
A
Bb
B
C
Db
D
Eb
E
F
A
Ab
A
Bb
Bb7
C
Db
D
Eb
E
F
Gb
G
Ab
A
B
3
5
7
10
The Db7b5 chord has the formula 1, 3, b5, b7 with notes Db, F, G, B
The seventh flat five chord is a variation of the dominant seventh chord. It is sometimes used as a passing chord in jazz tunes to resolve at a major or minor seventh chord one half-step down.