Gb Dominant 7th Sharp 11
Notes:Gb – Bb – Db – E – C
Formula:R-M3-A4-P5-m7
Intervals:P1-M3-A4-P5-m7
Scale Degrees:1-3-#4-5-b7
Introduction
The Gb Dominant 7th Sharp 11 piano chord (Gb7\u266f11) consists of the notes Gb, Bb, C, Db, E. 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: G♭ is enharmonically equivalent to F♯. See F# Dominant 7th Sharp 11.
Notes
Gb Dominant 7th Sharp 11 Inversions
| Position | Notes |
|---|---|
| Root Position | Gb4 – Bb4 – Db5 – E5 – C6 |
| 1st Inversion | Bb4 – C5 – Db5 – E5 – Gb5 |
| 2nd Inversion | C5 – Db5 – E5 – Gb5 – Bb5 |
Key Signature
The key of Gb Dominant 7th Sharp 11 has 6 flats: B♭, E♭, A♭, D♭, G♭, C♭.
B♭E♭A♭D♭G♭C♭
Theory: Intervals
Formula: R-M3-A4-P5-m7
Intervals: P1-M3-A4-P5-m7
The Gb 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.
Gb Dominant 7th Sharp 11 — Frequently Asked Questions
What notes are in the Gb Dominant 7th Sharp 11 chord?
Gb7#11 contains: Gb, Bb, C, Db, Fb. Lydian Dominant. Enharmonic of F#7#11.
How does Gb7#11 differ from Gb7?
Adds C (the #11).
How does Gb7#11 differ from Gb11?
Gb11 has Cb (clashes with Bb). Gb7#11 has C which doesn't clash.
How is Gb7#11 used?
Lydian Dominant. Tritone sub for C7. F#7#11 more commonly written.
What scale matches Gb7#11?
Gb Lydian Dominant — 4th mode of Db melodic minor.
What songs use 7#11?
Modern jazz.
Practice Tips
- Gb7#11 and F#7#11 are enharmonic.
- The #11 (C) doesn't clash with the third.
- Tritone sub for C7.
- Lydian Dominant scale.
- Translate to F#7#11 for easier reading.
- Jazz applications.