The D-sharp diminished seventh chord (abbreviated "D#dim7 chord") is a four-note chord consisting of the notes D, F, A, and C. The chord is formed by adding a diminished seventh to a D-sharp diminished chord.

Name
D-sharp diminished seventh chord
Synonym
D-sharp fully diminished chord
Notes
D F A C
Intervals
1 3 5 7
Chord symbol
Do7
Alternative symbols
Ddim7 Ddim Do
Type
Tetrad (four-note chord)

D#dim7 chord on piano

D#dim7 chord on guitar

D#dim7 chord on ukulele

D#dim7 chord on the staff