Dadd9 chord
D added ninth
<
1 / 9
>
G
F#
G
G#
A5
A#
B
C
C#
D
D#
E
F
F#
G
A
C
C
C#
D
D#
E9
F
F#
G
G#
A
A#
B
C
E
E
D#
E
F
F#3
G
G#
A
A#
B
C
C#
D
D#
E
F#
A
G#
A
A#
B
C
C#
D1
D#
E
F
F#
G
G#
A
D
3
5
7
10
The Dadd9 chord has the formula 1, 3, 5, 9 with notes D, F#, A, E
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.