G major 13th chord
Gmaj13 chord for piano with keyboard diagram.
Explanation: The G major thirteenth is a six-note chord (the 11th, C in the case of Gmaj13, is normally excluded). For practical reasons the chord is normally played with omitted notes and/or inverted. It is often abbreviated as Gmaj13 (not to be confused with G13).
Omissions: Gmaj13(no5): G - B - F# - A - E, Gmaj13(no9): G - B - D - F# - E.
Theory: The G major thirteenth chord is constructed by extending the major eleventh chord with a major thirteenth note.
Notes: G - B - D - F# - A - E