The D♯ Dominant 7th chord is a four-note chord made up of D♯, F♯♯, A♯, and C♯. It is built from a root, major third, perfect fifth, and minor seventh.
Construction
D♯ Dominant 7th = Root + Major 3rd + Perfect 5th + Minor 7th = D♯ · F♯♯ · A♯ · C♯
| Note | Interval | Degree |
|---|---|---|
| D♯ | Root | 1 |
| F♯♯ | Major 3rd | 3 |
| A♯ | Perfect 5th | 5 |
| C♯ | Minor 7th | ♭7 |
D♯ Dominant 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 dominant chord points home to the key a fifth below its root: the D♯ Dominant 7th is the V (dominant) of G# Major, so the relevant key signature is that key’s — 4 flats (B♭, E♭, A♭, D♭). Spelled as a scale, these notes are D# Mixolydian.
B♭E♭A♭D♭
Order of flats
Flats are added in a fixed order — the reverse of the sharp order. Each new flat key adds the next flat on the list.
B♭E♭A♭D♭G♭C♭F♭
Mnemonic: Battle Ends And Down Goes Charles’ Father
Chords in the Key of G♯ Major
These are the triads built on each degree of the G♯ major scale:
D♯ Dominant 7th — Frequently Asked Questions
What is the D♯ Dominant 7th chord on piano?
The D♯ Dominant 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# Dominant 7th chord?
D# Dominant 7th is built from the D# root. Check the interactive keyboard above for exact notes and fingering.
How is the D# Dominant 7th chord used in music?
D# Dominant 7th appears in jazz, pop, and classical contexts. Its sound depends on the chord quality (Dominant 7th).
What is the fingering for D# Dominant 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# Dominant 7th?
Use the inversion buttons above to see each inversion with notes, fingering, and staff notation.