The D-sharp dominant ninth chord (abbreviated "D#9 chord") is a five-note chord consisting of the notes D, F, A, C, and E. The chord is formed by adding a major ninth to a D-sharp dominant seventh chord.

In practice, the fifth (A) is sometimes omitted from the D#9 chord because it's not always possible to play all notes simultaneously.

Name
D-sharp dominant ninth chord
Notes
D F A C E
Intervals
1 3 5 7 9
Chord symbol
D9
Type
Pentad (five-note chord)

D#9 chord on piano

D#9 chord on guitar

D#9 chord on ukulele

D#9 chord on the staff