Bbma13 Major 7th
The Bbma13 chord is built from the notes Bb – D – F – A – C – Eb – G.
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Also known as
Bbmaj11add13Bbmaj7(9,11,13)
Chord tones, one by one
BbRoot
Root
The fundamental note the chord is built on — Bb.
DThird
Major third
Four semitones — makes the chord major (brighter, happier).
FFifth
Perfect fifth
Seven semitones — the most stable interval, reinforces the root.
ASeventh
Major seventh
Eleven semitones — a lush, jazzy seventh just below the octave (maj7).
CExtension
Ninth (9)
A 9th — colorful extension a whole step above the octave.
EbExtension
Eleventh (11)
An 11th — a suspended, airy color on top of the chord.
GExtension
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