B 11th chord
B11 chord for piano presented by keyboard diagrams.
Explanation: The B eleventh is a six-note chord. To avoid dissonance the third (D#) is normally omitted. The chord is also often played inverted. The chord is abbreviated as B11.
Theory: The B eleventh chord is constructed by adding a third to a ninth chord.
Notes: B - D# - F# - A - C# - E