Ab 11th chord
Ab11 chord for piano presented by keyboard diagrams.
Explanation: The A flat eleventh is a six-note chord. To avoid dissonance the third (C) is normally omitted. The chord is also often played inverted. The chord is abbreviated as Ab11.
Theory: The Ab eleventh chord is constructed by adding a third to a ninth chord.
Notes: Ab - C - Eb - Gb - Bb - Db