D7sus2 chord
D dominant seventh suspended second
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G
F#
G
G#
A5
A#
B
C
C#
D
D#
E
F
F#
G
A
C
C
C#
D1
D#
E
F
F#
G
G#
A
A#
B
C
D
E
D#
E2
F
F#
G
G#
A
A#
B
C
C#
D
D#
E
E
A
G#
A
A#
B
Cb7
C#
D
D#
E
F
F#
G
G#
A
C
3
5
7
10
The D7sus2 chord has the formula 1, 2, 5, b7 with notes D, E, A, C
The seventh suspended second chord is a variation of the suspended second chord, meaning that it does not have a third and sounds open. This chord can be used to prepare for a resolution up toward a third.