The D♯ Diminished 7th chord is a four-note chord made up of D♯, F♯, A, and C. It is built from a root, minor third, diminished fifth, and diminished seventh.
Construction
D♯ Diminished 7th = Root + Minor 3rd + Diminished 5th + Major 6th = D♯ · F♯ · A · C
| Note | Interval | Degree |
|---|---|---|
| D♯ | Root | 1 |
| F♯ | Minor 3rd | ♭3 |
| A | Diminished 5th | ♭5 |
| C | Major 6th | 6 |
D♯ Diminished 7th Inversions
| Position | Notes |
|---|---|
| Root Position | D♯ – F♯ – A – C |
| 1st Inversion | F♯ – A – C – D♯ |
| 2nd Inversion | A – C – D♯ – F♯ |
| 3rd Inversion | C – D♯ – F♯ – A |
Key Signature
A Diminished 7th chord is built from symmetrical or ambiguous intervals, so it doesn’t belong to a single key and has no key signature of its own.
Same Notes, Other Names
The notes D♯ – F♯ – A – C aren’t exclusive to this chord. Depending on which note is the bass and how the chord functions, the same pitches also spell the following:
D♯ Diminished 7th — Frequently Asked Questions
What is the D♯ Diminished 7th chord on piano?
The D♯ Diminished 7th chord contains the notes D♯ – F♯ – A – C. On piano, play these notes together to sound the chord.
What notes are in the D# Diminished 7th chord?
D# Diminished 7th is built from the D# root. Check the interactive keyboard above for exact notes and fingering.
How is the D# Diminished 7th chord used in music?
D# Diminished 7th appears in jazz, pop, and classical contexts. Its sound depends on the chord quality (Diminished 7th).
What is the fingering for D# Diminished 7th?
See the fingering chart above. Right hand typically uses thumb on root. Left hand uses pinky on root.
What are the inversions of D# Diminished 7th?
Use the inversion buttons above to see each inversion with notes, fingering, and staff notation.