D♯maj9♯11: D♯/E♭ Major 9th Sharp 11th Piano Chord

Construction

D♯ Major 9♯11 = Root + Major 3rd + Perfect 5th + Major 7th + Major 2nd + Diminished 5th = D♯, F♯♯, A♯, C♯♯, E♯, G♯♯

Note	Interval	Degree
D♯	Root	1
F♯♯	Major 3rd	3
A♯	Perfect 5th	5
C♯♯	Major 7th	7
E♯	Major 2nd	9
G♯♯	Diminished 5th	♭5

Key Signature

A chord has no key signature of its own, but the D♯ Major 9♯11 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 D♯ Major:

I — D♯ Major (major)

Degree	Numeral	Chord	Quality
1	I	D♯ Major	Major
2	ii	E♯ Minor	Minor
3	iii	F♯♯ Minor	Minor
4	IV	G♯ Major	Major
5	V	A♯ Major	Major
6	vi	B♯ Minor	Minor
7	vii°	C♯♯ Diminished	Diminished

D♯ Major 9♯11 : Frequently Asked Questions

What is the D♯ Major 9♯11 chord on piano?

The D♯ Major 9♯11 chord contains the notes D♯ – F♯♯ – A♯ – C♯♯ – E♯ – G♯♯. On piano, play these notes together to sound the chord.

What is the D# piano chord?

The D# piano chord (written D♯ Major 9♯11) uses the same keys: D♯ – F♯♯ – A♯ – C♯♯ – E♯ – G♯♯. The # and ♯ symbols name the same black key.