E♭ Dominant 7th Sharp 11
Notes:E♭ – G – B♭ – D♭ – A
Formula:R-M3-A4-P5-m7
Intervals:P1-M3-A4-P5-m7
Scale Degrees:1-3-#4-5-b7
Introduction
The Eb Dominant 7th Sharp 11 piano chord (Eb7\u266f11) consists of the notes Eb, G, A, Bb, Db. It is a dominant 7th chord with an augmented (sharpened) 11th, creating a distinctive tritone clash, giving it a tense, tritone-driven character central to the Lydian Dominant sound in jazz and fusion. Formula: R-M3-A4-P5-m7 | Scale degrees: 1-3-#4-5-b7.
Enharmonic equivalent: E♭ is enharmonically equivalent to D♯. See D# Dominant 7th Sharp 11.
Notes
Key Signature
The key of Eb Dominant 7th Sharp 11 has 3 flats: B♭, E♭, A♭.
B♭E♭A♭
Theory: Intervals
Formula: R-M3-A4-P5-m7
Intervals: P1-M3-A4-P5-m7
The E♭ Dominant 7th Sharp 11 is built by stacking intervals from the root note. The formula R-M3-A4-P5-m7 describes the scale degrees used. The intervals P1-M3-A4-P5-m7 show the distance between each note in the chord.
E♭ Dominant 7th Sharp 11 — Frequently Asked Questions
What notes are in the Eb Dominant 7th Sharp 11 chord?
Eb7#11 contains: Eb, G, A, Bb, Db. Lydian Dominant sound.
How does Eb7#11 differ from Eb7?
Adds A (the #11). Brighter and more complex.
How does Eb7#11 differ from Eb11?
Eb11 has Ab (natural 11th, clashes with G). Eb7#11 has A which doesn't clash.
How is Eb7#11 used in music?
Lydian Dominant. Jazz. Tritone sub for A7.
What scale matches Eb7#11?
Eb Lydian Dominant: Eb, F, G, A, Bb, C, Db — 4th mode of Bb melodic minor.
What songs use 7#11?
Modern jazz, fusion.
Practice Tips
- Play Eb7 then add A — Lydian Dominant brightness.
- The #11 doesn't clash with the third.
- Eb7#11 as tritone sub for A7.
- Lydian Dominant scale over this chord.
- Common in jazz standards.
- Practice Eb7#11 → Ab resolution.