The D♯ Add 4 chord is a four-note chord made up of D♯, F♯♯, G♯, and A♯.
Construction
D♯ Add 4 = Root + Major 3rd + Perfect 4th + Perfect 5th = D♯ · F♯♯ · G♯ · A♯
| Note | Interval | Degree |
|---|---|---|
| D♯ | Root | 1 |
| F♯♯ | Major 3rd | 3 |
| G♯ | Perfect 4th | 4 |
| A♯ | Perfect 5th | 5 |
Key Signature
A chord has no key signature of its own, but the D♯ Add 4 is the tonic (I) chord of D# Major, whose key signature has 3 flats (B♭, E♭, A♭).
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.
B♭E♭A♭D♭G♭C♭F♭
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:
D♯ Add 4 — Frequently Asked Questions
What is the D♯ Add 4 chord on piano?
The D♯ Add 4 chord contains the notes D♯ – F♯♯ – G♯ – A♯. On piano, play these notes together to sound the chord.