Abm9 chord
The A-flat minor ninth chord (abbreviated "Abm9 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 minor seventh chord.
In practice, the fifth (E♭) is sometimes omitted from the Abm9 chord because it's not always possible to play all notes simultaneously.
Name
A-flat minor ninth chord
Notes
A♭ C♭ E♭ G♭ B♭
Intervals
1 ♭3 5 ♭7 9
Chord symbol
A♭m9
Alternative symbols
A♭–9 A♭mi9 A♭min9
Type
pentad (five-note chord)