C Major Sixth/Ninth Chord

Also known as:
C6/9 , C Sixth/Ninth , C Major 6/9 , CM6/9 , Cmaj6/9 , CMaj6/9 , Cma6/9 , CΔ6/9

The Major Sixth/Ninth Chord has a Major quality which includes a Major Third interval that produces a generally happy sound. Major Sixth/Ninth Chord contains the notes C, E, G, A, D. The Major Sixth/Ninth Chord is an Added type chord which means it includes a Triad (the Root C, the Third E, and the Fifth G) and one or more additional notes, in this case the Sixth A and the Ninth D.

Below you will find the Major Sixth/Ninth Chord notes, notation, degrees, intervals, related scales and chords, and more.


C, E, G, A, D

Can be omitted: G





C > C0Perfect Unison (P1)
C > E4Major 3rd (M3)
C > G7Perfect 5th (P5)
C > A9Major 6th (M6)
C > D14Major 9th (M9)

Scales related to C Major Sixth/Ninth Chord

Chords related to C Major Sixth/Ninth Chord

Enharmonic Equivalent

Chord with the same root and notes as the C Major Sixth/Ninth Chord but different spelling.

B♯ Major Sixth/Ninth Chord

Same Notes

Chords that have all of the same notes (in any spelling) as the C Major Sixth/Ninth Chord.

B♯ Major Sixth/Ninth Chord

D Dominant Ninth Suspended Fourth Chord

Same Root Note

Chords that include the same notes (in any spelling) as the C Major Sixth/Ninth Chord and have the same root note.

C Major Thirteenth Chord

C Dominant Thirteenth Chord

If you want to learn what chords are and much more, check out our free Fundamentals of Music Theory course. If you already know some of the basics, you can jump straight into the chords lesson.

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