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

Construction

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

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

Key Signature

A chord has no key signature of its own, but the E♭ 9♯11 is the tonic (I) chord of E♭ 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 E♭ Major

These are the triads built on each degree of E♭ Major:

I — E♭ Major (major)

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

E♭ 9♯11 : Frequently Asked Questions

What is the E♭ 9♯11 chord on piano?

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