Ao9(#11) Diminished
The Ao9(#11) chord is built from the notes A – C – Eb – Gb – B – D#.
Piano sound loads on first tap.
Chord tones, one by one
ARoot
Root
The fundamental note the chord is built on — A.
CThird
Minor third
Three semitones — makes the chord minor (darker, sadder).
EbFifth
Diminished fifth (♭5)
Six semitones — a flat fifth. Creates instability, typical of m7♭5 and diminished chords.
GbSeventh
Diminished seventh (♭♭7)
Nine semitones — a doubly-flat seventh, found in fully diminished 7th chords.
BExtension
Ninth (9)
A 9th — colorful extension a whole step above the octave.
D#Extension
Sharp eleventh (♯11)
A ♯11 — the bright, floating Lydian color.
🎼 Related scales
🎹 Modal analysis
This chord implies the Whole-half diminished scale.
🎸 Genres
Bebop jazz · Hard bop · Gypsy jazz