Ab-7b9#5 Augmented
The Ab-7b9#5 chord is built from the notes Ab – Cb – E – Gb – Bbb.
Piano sound loads on first tap.
Also known as
Abm7#5b9Abm7#5b9#13Abm7(#5)b9Abmi7#5b9Abmi7(b9#5)Abmi7b9#5Abminalt
Chord tones, one by one
AbRoot
Root
The fundamental note the chord is built on — Ab.
CbThird
Minor third
Three semitones — makes the chord minor (darker, sadder).
EFifth
Augmented fifth (♯5)
Eight semitones — a sharp fifth. Restless and dreamy, typical of augmented chords.
GbSeventh
Minor seventh (♭7)
Ten semitones — the dominant/minor seventh. Adds bluesy tension (7, m7).
BbbExtension
Flat ninth (♭9)
A ♭9 — sharp, dissonant tension typical of altered dominant chords.
🎼 Related scales
🎹 Modal analysis
This chord implies the Phrygian scale; its characteristic note is the ♭9 / ♭2.
🎸 Genres
Flamenco · Metal · Modal jazz