Fbmaj13 chord
The F-flat major thirteenth chord (abbreviated "Fbmaj13 chord") is a seven-note chord consisting of the notes F♭, A♭, C♭, E♭, G♭, B♭♭, and D♭. The chord is formed by adding a thirteenth to a F-flat major eleventh chord.
In practice, the fifth (C♭) and eleventh (B♭♭) are often omitted from the Fbmaj13 chord to avoid a very dissonant sound, and because it's not always possible to play all notes simultaneously.
Name
F-flat major thirteenth chord
Notes
F♭ A♭ C♭ E♭ G♭ B♭♭ D♭
Intervals
1 3 5 7 9 11 13
Chord symbol
F♭maj13
Alternative symbols
F♭▵13 F♭ma13 F♭MA13 F♭M13
Type
Heptad (seven-note chord)