Eb+7(b9) Augmented
The Eb+7(b9) chord is built from the notes Eb – G – B – Db – Fb.
Piano sound loads on first tap.
Also known as
Eb+7b9Eb7#5b9Eb7(#5,b9)Eb7(#5b9)Eb7+b9Eb7b9#5Ebaug7(no5)b9Ebaug7b9
Chord tones, one by one
EbRoot
Root
The fundamental note the chord is built on — Eb.
GThird
Major third
Four semitones — makes the chord major (brighter, happier).
BFifth
Augmented fifth (♯5)
Eight semitones — a sharp fifth. Restless and dreamy, typical of augmented chords.
DbSeventh
Minor seventh (♭7)
Ten semitones — the dominant/minor seventh. Adds bluesy tension (7, m7).
FbExtension
Flat ninth (♭9)
A ♭9 — sharp, dissonant tension typical of altered dominant chords.
🎼 Related scales
Altered (super-Locrian)melodic minor a semitone above
🎹 Modal analysis
This chord implies the Altered (super-Locrian) scale; its characteristic note is the ♭13, a dominant's maximum tension. It is a mode of the melodic minor a semitone above.
🎸 Genres
Modern jazz · Post-bop · Fusion