C major 9th chord

Cmaj9 chord for piano with keyboard diagram.
Explanation: The C major ninth is a five-note chord and can be regarded as a Cmaj7 with an added ninth. It is often abbreviated as Cmaj9 (not to be confused with C9).
Omissions: Cmaj9(no3): C - G - B - D; Cmaj9(no5): C - E - B - D.
Theory: The Cmaj9 chord is constructed with a root, a major third, a perfect fifth, a major seventh and a major ninth.


Cmaj9 piano chord
Notes: C - E - G - B - D

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Cmaj9 inversions and voicings

Cmaj9 chord diagram
Notes: (left hand) C - G (right hand) B - D - E
Two-hand voicing

Cmaj9 chord diagram
Notes: (left hand) C - E (right hand) B - D
Two-hand voicing (the 5th is omitted)

C chord categories

C Cm C7 Cm7 Cmaj7 CmM7 C6 Cm6 C6/9 C5 C9 Cm9 Cmaj9 C11 Cm11 Cmaj11 C13 Cm13 Cmaj13 Cadd C7-5 C7+5 Csus Cdim Cdim7 Cm7b5 Caug Caug7