Fbmaj11 chord
The F-flat major eleventh chord (abbreviated "Fbmaj11 chord") is a six-note chord consisting of the notes F♭, A♭, C♭, E♭, G♭, and B♭♭. The chord is formed by adding an eleventh to a F-flat major ninth chord.
In practice, the fifth (C♭) is often omitted from the Fbmaj11 chord to avoid a very dissonant sound, and because it's not always possible to play all notes simultaneously.
Name
F-flat major eleventh chord
Notes
F♭ A♭ C♭ E♭ G♭ B♭♭
Intervals
1 3 5 7 9 11
Chord symbol
F♭maj11
Alternative symbols
F♭▵11 F♭ma11 F♭MA11 F♭M11
Type
hexad (six-note chord)