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

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

Name
E-sharp dominant ninth chord
Notes
E G B D F
Intervals
1 3 5 7 9
Chord symbol
E9
Type
Pentad (five-note chord)

E#9 chord on piano

E#9 chord on guitar

E#9 chord on ukulele

E#9 chord on the staff