Bbmaj11(b11) Major 7th
The Bbmaj11(b11) chord is built from the notes Bb – D – F – A – D.
Piano sound loads on first tap.
Also known as
Bbmaj7(b11)
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).
DExtension
Extension (16 st)
An upper extension 16 semitones above the root.
🎼 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