Root : A♭
4th : D♭
5th : E♭
Dominant 7th : G♭
9th : B♭
A♭9sus4
Contains a D♭ as the bass note.
Notated as A♭/D♭
A♭9sus4/D♭
Contains an E♭ as the bass note.
Notated as A♭/E♭
A♭9sus4/E♭
Contains a B♭ as the bass note.
Notated as A♭/B♭
A♭9sus4/B♭
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.