Root : B♭
4th : E♭
5th : F
Dominant 7th : A♭
9th : C
B♭9sus4
Contains an E♭ as the bass note.
Notated as B♭/E♭
B♭9sus4/E♭
Contains an F as the bass note.
Notated as B♭/F
B♭9sus4/F
Contains a C as the bass note.
Notated as B♭/C
B♭9sus4/C
A jazz sus chord or dominant 9sus4 chord is a seventh chord on the fifth scale degree of the key with a suspended fourth and an added ninth. Functionally, it can be written as V9sus4 or V7sus9.