B7sus2 chord
B dominant seventh suspended second
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G
F#
G
G#
Ab7
A#
B
C
C#
D
D#
E
F
F#
G
A
C
C
C#2
D
D#
E
F
F#
G
G#
A
A#
B
C
C#
E
D#
E
F
F#5
G
G#
A
A#
B
C
C#
D
D#
E
F#
A
G#
A
A#
B1
C
C#
D
D#
E
F
F#
G
G#
A
B
3
5
7
10
The B7sus2 chord has the formula 1, 2, 5, b7 with notes B, C#, F#, A
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.