F
F
F#
G
G#
A
D#
C
C#
D
D#
E
A#
G#
A
A#
B
C
D#
D#
E
F
F#
G
A#
A#
B
C
C#
D
X
F
F#
G
G#
A
1
2
3
4
5
A#sus4
Sus4Also known as: Bbsus4
About this chord
A#sus4 (also written Bb sus4 or A# suspended fourth) has a bold, unresolved, and expectant feel—tense yet uplifting, with a bright, anthemic push. Heard in pop-rock and alternative, it also fits EDM builds and cinematic cues where suspense and lift are needed. On guitar it often needs a barre or power-shape grip; on keys it’s straightforward, making it beginner-friendly to voice but deceptively expressive. Commonly used as a V-sus or tonic-sus to delay resolution (A#sus4 → A#), it adds drama in hooks, turnarounds, and stadium rock choruses.
Intervals
145
Tuning
StandardE B G D A E
Position Frets 1 - 5
Tags
base