C# 6/9 chord
C#6/9 chord for piano with keyboard diagram.
Explanation: The C sharp sixth/ninth is a five-note chord. Due to practical circumstances, however, the fifth (G#) is often omitted and/or the chord is played inverted. The chord is abbreviated C#6/9. It can also be written C#6add9 or C#maj6add9.
Theory: The C#6/9 chord is constructed with a root, a major third, a perfect fifth, a major sixth and a major ninth. That gives the chord formula 1 - 3 - 5 - 6 - 9.
C#6/9
Notes: C# - F - G# - A# - D# / C# - E# - G# - A# - D#
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See also C#m6/9 chord ›