Gb13#11 Dominant 7th
The Gb13#11 chord is built from the notes Gb – Bb – Db – Fb – Ab – C – Eb.
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Also known as
Gb13(#11)Gb13add#11
Chord tones, one by one
GbRoot
Root
The fundamental note the chord is built on — Gb.
BbThird
Major third
Four semitones — makes the chord major (brighter, happier).
DbFifth
Perfect fifth
Seven semitones — the most stable interval, reinforces the root.
FbSeventh
Minor seventh (♭7)
Ten semitones — the dominant/minor seventh. Adds bluesy tension (7, m7).
AbExtension
Ninth (9)
A 9th — colorful extension a whole step above the octave.
CExtension
Sharp eleventh (♯11)
A ♯11 — the bright, floating Lydian color.
EbExtension
Thirteenth (13)
A 13th — full, rich top extension.
🎼 Related scales
Lydian dominant (acoustic)melodic minor a perfect 4th below
🎹 Modal analysis
This chord implies the Lydian dominant (acoustic) scale; its characteristic note is the ♯11 over a ♭7 (the acoustic sound). It is a mode of the melodic minor a perfect 4th below.
🎸 Genres
Jazz fusion · Modal jazz · Bossa/MPB