Fmaj11#5 Augmented
The Fmaj11#5 chord is built from the notes F – A – C# – E – G – B.
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Also known as
Fmaj9(#5)(#4)
Chord tones, one by one
FRoot
Root
The fundamental note the chord is built on — F.
AThird
Major third
Four semitones — makes the chord major (brighter, happier).
C#Fifth
Augmented fifth (♯5)
Eight semitones — a sharp fifth. Restless and dreamy, typical of augmented chords.
ESeventh
Major seventh
Eleven semitones — a lush, jazzy seventh just below the octave (maj7).
GExtension
Ninth (9)
A 9th — colorful extension a whole step above the octave.
BExtension
Sharp eleventh (♯11)
A ♯11 — the bright, floating Lydian color.
🎼 Related scales
Lydian augmentedmelodic minor a minor 3rd below
🎹 Modal analysis
This chord implies the Lydian augmented scale; its characteristic note is the dreamy, suspended ♯5. It is a mode of the melodic minor a minor 3rd below.
🎸 Genres
Film & TV scoring · Modal jazz · Impressionism