F#ma13 Major 7th
The F#ma13 chord is built from the notes F# – A# – C# – E# – G# – B – D#.
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Also known as
F#maj11add13F#maj7(9,11,13)
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).
G#Extension
Ninth (9)
A 9th — colorful extension a whole step above the octave.
BExtension
Eleventh (11)
An 11th — a suspended, airy color on top of the chord.
D#Extension
Thirteenth (13)
A 13th — full, rich top extension.
🎼 Related scales
🎹 Modal analysis
This chord implies the Ionian (major) scale; its characteristic note is the perfect 4th, what sets it apart from Lydian.
🎸 Genres
Pop · Classical · Gospel