Gb+9 Augmented
The Gb+9 chord is built from the notes Gb – Bb – D – Fb – Ab.
Piano sound loads on first tap.
Also known as
Gb7(augmented9)Gb7+9Gb9#5Gb9(#5)Gbaug9Gbaug9#5
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).
DFifth
Augmented fifth (♯5)
Eight semitones — a sharp fifth. Restless and dreamy, typical of augmented chords.
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.
🎼 Related scales
🎹 Modal analysis
This chord implies the Whole tone scale; its characteristic note is the dreamy, suspended ♯5.
🎸 Genres
Impressionism · Film & TV scoring · Jazz