Abm13 chord
The A-flat minor thirteenth chord (abbreviated "Abm13 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 minor eleventh chord.
In practice, the fifth (E♭) and eleventh (D♭) are often omitted from the Abm13 chord to avoid a very dissonant sound, and because it's not always possible to play all notes simultaneously.
Name
A-flat minor thirteenth chord
Notes
A♭ C♭ E♭ G♭ B♭ D♭ F
Intervals
1 ♭3 5 ♭7 9 11 13
Chord symbol
A♭m13
Alternative symbols
A♭–13 A♭mi13 A♭min13
Type
heptad (seven-note chord)