Abmaj9 chord
The A-flat major ninth chord (abbreviated "Abmaj9 chord") is a five-note chord consisting of the notes A♭, C, E♭, G, and B♭. The chord is formed by adding a major ninth to a A-flat major seventh chord.
In practice, the fifth (E♭) is sometimes omitted from the Abmaj9 chord because it's not always possible to play all notes simultaneously.
Name
A-flat major ninth chord
Notes
A♭ C E♭ G B♭
Intervals
1 3 5 7 9
Chord symbol
A♭maj9
Alternative symbols
A♭▵9 A♭ma9 A♭MA9 A♭M9
Type
Pentad (five-note chord)