The C 6/9 chord is a five-note chord made up of C, E, G, A, and D. It is built from a root, major third, perfect fifth, major sixth, and major ninth.
Construction
C 6/9 = Root + Major 3rd + Perfect 5th + Major 6th + Major 2nd = C · E · G · A · D
| Note | Interval | Degree |
|---|---|---|
| C | Root | 1 |
| E | Major 3rd | 3 |
| G | Perfect 5th | 5 |
| A | Major 6th | 6 |
| D | Major 2nd | 2 |
Key Signature
A chord has no key signature of its own, but the C 6/9 is the tonic (I) chord of C Major, whose key signature has no sharps or flats.
Chords in the Key of C Major
These are the triads built on each degree of the C major scale:
Same Notes, Other Names
The notes C – E – G – A – D aren’t exclusive to this chord. Depending on which note is the bass and how the chord functions, the same pitches also spell:
C 6/9 — Frequently Asked Questions
What is the C 6/9 chord on piano?
The C 6/9 chord contains the notes C – E – G – A – D. On piano, play these notes together to sound the chord.
What notes are in the C 6/9 chord?
The C 6/9 chord (C6/9) contains 5 notes: C, E, G, A, D. Formula: R-M3-P5-M6-M9.
How is C6/9 used in music?
C6/9 is used in jazz, fusion, and contemporary music to add harmonic color. It appears as a dominant or tonic chord depending on context.
What is the scale degree formula for C6/9?
C6/9 uses scale degrees 1-3-5-6-9, giving it its distinctive sound.