Gbadd9 chord
Gb added ninth
<
1 / 4
>G
Gb
G
Ab9
A
Bb
B
C
Db
D
Eb
E
F
Gb
G
Ab
C
C
Db5
D
Eb
E
F
Gb
G
Ab
A
Bb
B
C
Db
E
Eb
E
F
Gb1
G
Ab
A
Bb
B
C
Db
D
Eb
E
Gb
A
Ab
A
Bb3
B
C
Db
D
Eb
E
F
Gb
G
Ab
A
Bb
3
5
7
10
The Gbadd9 chord has the formula 1, 3, 5, 9 with notes Gb, Bb, Db, Ab
The added ninth chord can be built by taking a major chord and adding the 9th of the scale. It serves a similar purpose to the major chord, with the additional extension for color or harmonizing with other instruments.