C9
9 · C – E – G – A♯ – D
- CR
- E3
- G5
- A♯♭7
- D9
Guitar voicings
Piano
- Root
- Third / sus
- Fifth
- Sixth / seventh
- Extension
About the C9 chord
The C9 chord (9) is built from C (the root), E (a major third), G (a perfect fifth), A♯ (a minor seventh) and D (a ninth). Ninth chords extend the dominant seventh into a rich, funky sound at home in funk and jazz.