Chord · C 6/9
C6/9 Chord
C6/9 is C, E, G, A and D — lush, neutral substitute for major triads.
C6/9 on every instrument
The same 5 notes, 2 sets of hands. Open a diagram for alternate shapes, audio and the mistakes to avoid.
What C6/9 is made of
C6/9 (C six nine) is built from the notes C, E, G, A, D, with the interval pattern 1, 3, 5, 6, 9.
Stack 1, 3, 5, 6 and 9 on a root of C and you get C, E, G, A and D. That interval recipe is what makes the chord a six nine chord — move the same shape to another root and the character travels with it, which is why D6/9 sounds like a transposed C6/9.
6/9: Lush, neutral substitute for major triads.
Spelling: the notes above are written the way a score would write them, not simplified to the nearest piano key. Every tone here lands on its own letter — no accidentals needed.
Keys that contain C6/9
All 5 notes sit inside the scale of 6 keys. The roman numeral marks the degree the chord is rooted on.
Other chords on C
Same root, different colour.
The same six nine shape, moved
The identical interval recipe, built on other roots.
Questions people ask about C6/9
- What notes are in the C6/9 chord?
- C6/9 is made of C, E, G, A and D — the 1, 3, 5, 6 and 9 degrees of a six nine chord built on C.
- What keys use the C6/9 chord?
- Every note of C6/9 belongs to 6 keys: C Major (I), F Major (V), G Major (IV), A Minor (III), D Minor (VII), E Minor (VI). The roman numeral is the scale degree the chord is rooted on.
- How do you play C6/9 on guitar and piano?
- This page shows C6/9 on guitar and piano — 5 voicings in total. Each diagram links to the full instrument page with alternate shapes, audio and common mistakes.
Learn the theory behind it
Why C6/9 behaves the way it does — the guides that explain the chord instead of just spelling it.