F#ma7add#13 Major 7th
The F#ma7add#13 chord is built from the notes F# – A# – C# – E# – B#.
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Also known as
F#maj7#11F#maj7(#11)
Chord tones, one by one
F#Root
Root
The fundamental note the chord is built on — F#.
A#Third
Major third
Four semitones — makes the chord major (brighter, happier).
C#Fifth
Perfect fifth
Seven semitones — the most stable interval, reinforces the root.
E#Seventh
Major seventh
Eleven semitones — a lush, jazzy seventh just below the octave (maj7).
B#Extension
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