A9 chord
A dominant ninth
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1 / 10
>G
F#
G
G#
A1
A#
B
C
C#
D
D#
E
F
F#
G
A
C
C
C#3
D
D#
E
F
F#
G
G#
A
A#
B
C
C#
E
D#
E
F
F#
Gb7
G#
A
A#
B
C
C#
D
D#
E
G
A
G#
A
A#
B9
C
C#
D
D#
E
F
F#
G
G#
A
B
3
5
7
10
The A9 chord has the formula 1, 3, b7, 9 with notes A, C#, G, B
The dominant ninth chord is mostly used in funk, blues and some rock music. It is usually played without the 5th on the ukulele.