The D♯ Power chord is a two-note chord made up of D♯ and A♯. It is built from a root and perfect fifth.
Construction
| Note | Interval | Degree |
|---|---|---|
| D♯ | Root | 1 |
| A♯ | Perfect 5th | 5 |
D♯ Power Inversions

| Position | Notes |
|---|---|
| Root Position | D♯ – A♯ |
| 1st Inversion | A♯ – D♯ |
| 2nd Inversion | — |
Key Signature
A chord has no key signature of its own, but the D♯ Power is the tonic (I) chord of D# Major, whose key signature has 3 flats (B♭, E♭, A♭).
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.
Mnemonic: Battle Ends And Down Goes Charles’ Father
Chords in the Key of D♯ Major
These are the triads built on each degree of the D♯ major scale: