The D-sharp dominant seventh chord (abbreviated "D#7 chord") is a four-note chord consisting of the notes D♯, F, A♯, and C♯. The chord is formed by adding a minor seventh to a D-sharp major chord.
D-sharp dominant seventh chord
D-sharp major-minor seventh chord
D♯ F A♯ C♯
1 3 5 ♭7
Tetrad (four-note chord)