Ab eleventh chords
Ab11 chord for piano presented by keyboard diagrams.
Explanation: The A flat eleventh is a six note chord. Due to practical circumstances and/or dissonance the third (C) is omitted and/or the chord is played inverted. The chord is often 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