Gb 11th chord
Gb11 chord for piano presented by keyboard diagrams.
Explanation: The G flat eleventh is a six-note chord. To avoid dissonance the third (Bb) is normally omitted. The chord is also often played inverted. The chord is abbreviated as Gb11.
Theory: The Gb eleventh chord is constructed by adding a third to a ninth chord.
Notes: Gb - Bb - Db - E - Ab - B / Gb - Bb - Db - E - Ab - Cb