C# major 11th chord
C#maj11 chord for piano with keyboard diagram.
Explanation: The C sharp major eleventh is a six-note chord. For practical reasons the chord is normally played with omitted notes and/or inverted. It is often abbreviated as C#maj11 or C#maj9(#11). In the latter case, the chord is played with a raised eleventh to avoid dissonance with the 3rd.
Omissions: C#maj11(no5): C# - F - C - D# - F#.
Theory: The C# major eleventh chord is constructed by extending the major ninth chord with a major eleventh note.
C#maj11
Notes: C# - F - G# - C - D# - F# / C# - E# - G# - B# - D# - F#
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