A#7sus4 chord
A# dominant seventh suspended fourth
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ukulele fretboard
G
F#
G
G#b7
A
A#
B
C
C#
D
D#
E
F
F#
G
G#
C
C
C#
D
D#4
E
F
F#
G
G#
A
A#
B
C
D#
E
D#
E
F5
F#
G
G#
A
A#
B
C
C#
D
D#
E
F
A
G#
A
A#1
B
C
C#
D
D#
E
F
F#
G
G#
A
A#
3
5
7
10
The A#7sus4 chord has the formula 1, 4, 5, b7 with notes A#, D#, F, G#
The seventh suspended fourth chord is a variation of the suspended fourth chord, meaning that it does not have a third and sounds open. This chord can be used to prepare for a resolution down toward a third.