Abma9(#11) Major 7th
The Abma9(#11) chord is built from the notes Ab – C – Eb – G – Bb – D.
Piano sound loads on first tap.
Also known as
Abmaj9(#11)Abmaj9(#4)Abmaj9#11
Chord tones, one by one
AbRoot
Root
The fundamental note the chord is built on — Ab.
CThird
Major third
Four semitones — makes the chord major (brighter, happier).
EbFifth
Perfect fifth
Seven semitones — the most stable interval, reinforces the root.
GSeventh
Major seventh
Eleven semitones — a lush, jazzy seventh just below the octave (maj7).
BbExtension
Ninth (9)
A 9th — colorful extension a whole step above the octave.
DExtension
Sharp eleventh (♯11)
A ♯11 — the bright, floating Lydian color.
🎼 Related scales
🎹 Modal analysis
This chord implies the Lydian scale; its characteristic note is the bright, floating ♯11.
🎸 Genres
Film & TV scoring · Modal jazz · Impressionism