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D♯ 7♭9♯11

Also known as E♭ 7♭9♯11
Same keys, different spelling.
Open E♭ 7♭9♯11Same chord, spelled with flatsWhat are enharmonics? →Why one chord has two names
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Listen plays the chord. Play Along lights up each note in order so you can follow.

D♯7♭9♯11
D♯ – F♯♯ – A♯ – C♯ – E – G♯♯
Formula:R-M3-P5-m7-m9-A11
Intervals:P1-M3-P5-m7-m9-A11
Scale Degrees:1-3-5-b7-b9-#11

Introduction

D# 7♭9♯11 piano chord, root position — D#, G, A#, C#, E, A
The D# 7♭9♯11 chord in root position on a piano keyboard, notes D#, G, A#, C#, E, A.

The D♯ 7♭9♯11 chord is a six-note chord made up of D♯, F♯♯, A♯, C♯, E, and G♯♯. It is built from a root, major third, perfect fifth, minor seventh, minor ninth, and augmented eleventh.

Notes

Notes:D♯ – F♯♯ – A♯ – C♯ – E – G♯♯

Key Signature

The key of D# 7♭9♯11 (enharmonically equivalent to Eb 7♭9♯11) 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.

BEADGCF

Mnemonic: Battle Ends And Down Goes Charles’ Father

Chords in the Key of D♯ Major

These are the diatonic triads built on each degree of the D♯ major scale:

C
D
E
F
G
A
B
C
D
E
F
G
A
B
ID♯ Major (major)
DegreeNumeralChordQuality
1ID♯ MajorMajor
2iiF MinorMinor
3iiiG MinorMinor
4IVG♯ MajorMajor
5VA♯ MajorMajor
6viC MinorMinor
7vii°D DiminishedDiminished

Theory: Intervals

Formula: R-M3-P5-m7-m9-A11
Intervals: P1-M3-P5-m7-m9-A11

The D♯ 7♭9♯11 is built by stacking intervals from the root note. The formula R-M3-P5-m7-m9-A11 describes the scale degrees used. The intervals P1-M3-P5-m7-m9-A11 show the distance between each note in the chord.

D♯ 7♭9♯11 — Frequently Asked Questions

What notes are in the D# 7♭9♯11 chord?
The D# 7♭9♯11 chord (D#7♭9♯11) contains 6 notes: D#, G, A#, C#, E, A. Formula: R-M3-P5-m7-m9-A11.
How is D#7♭9♯11 used in music?
D#7♭9♯11 is used in jazz, fusion, and contemporary music to add harmonic color. It appears as a dominant or tonic chord depending on context.
What is the scale degree formula for D#7♭9♯11?
D#7♭9♯11 uses scale degrees 1-3-5-b7-b9-#11, giving it its distinctive sound.

Practice Tips

  • Start by placing your thumb on D# and spacing remaining fingers across the chord.
  • Practice D#7♭9♯11 slowly with separate hands before combining.
  • Listen carefully to the tension created by the altered tones in this chord.
  • Try voicing D#7♭9♯11 in different octaves to find the most comfortable position.
  • Resolve D#7♭9♯11 to a nearby chord to hear its function in context.

Related Tools

Chord FinderLook up any chord — see the notes, hear it, and play along.Chord DrillTimed drills to build speed and recognition across all chord types.Practice RoomPlug in a MIDI keyboard and get real-time feedback on every chord and scale.Circle of FifthsVisualize key relationships, relative minors, and key signatures.MIDI MonitorLive MIDI message stream with note names, velocity, and a scrolling staff.