Abmaj13 chord
The A-flat major thirteenth chord (abbreviated "Abmaj13 chord") is a seven-note chord consisting of the notes A♭, C, E♭, G, B♭, D♭, and F. The chord is formed by adding a thirteenth to a A-flat major eleventh chord.
In practice, the fifth (E♭) and eleventh (D♭) are often omitted from the Abmaj13 chord to avoid a very dissonant sound, and because it's not always possible to play all notes simultaneously.
Name
A-flat major thirteenth chord
Notes
A♭ C E♭ G B♭ D♭ F
Intervals
1 3 5 7 9 11 13
Chord symbol
A♭maj13
Alternative symbols
A♭▵13 A♭ma13 A♭MA13 A♭M13
Type
Heptad (seven-note chord)