The D-sharp major sixth-ninth chord (abbreviated "D#6/9 chord") is a five-note chord consisting of the notes D♯, F, A♯, B♯, and E♯. The chord is formed by adding a major sixth and a major ninth to a D-sharp major chord.
D-sharp major sixth-ninth chord
D♯ F A♯ B♯ E♯
1 3 5 6 9
Pentad (five-note chord)