G13#11 chord for piano presented by keyboard diagrams.
Explanation: The G13#11 alter the G13 by the change of one note. The G thirteenth sharp eleventh is a seven-note chord, but due to practical circumstances, one or more notes (the fifth primarily) are omitted. The chord name can also be written as G13(#11) or G13+11.
Theory: Compared to G13 the eleventh tone in the chord is sharpenedThe tone is one half step higher.
Notes: G - B - D - F - A - C# - E