The B-flat suspended fourth chord (abbreviated "Bbsus4 chord") is a triad consisting of the notes B, E, and F. The chord is formed by replacing the third of a B-flat major chord with a perfect fourth.

Name
B-flat suspended fourth chord
Notes
B E F
Intervals
1 4 5
Chord symbol
Bsus4
Alternative symbols
B(sus4) Bsus
Type
Triad (three-note chord)

Bbsus4 chord on piano

Bbsus4 chord on guitar

Bbsus4 chord on ukulele

Bbsus4 chord on the staff