Root : D#
4th : G#
5th : A#
Dominant 7th : C#
9th : F
D#9sus4
Contains a G# as the bass note.
Notated as D#/G#
D#9sus4/G#
Contains an A# as the bass note.
Notated as D#/A#
D#9sus4/A#
Contains an F as the bass note.
Notated as D#/F
D#9sus4/F
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.