Cm9
Extended · C root
Cm9
Rich and soulful. A favourite in R&B and jazz voicings.
0 st3 st7 st10 st14 st
Notes in Cm9
CRoot
D#3rd
G5th
A#7th
D9th
C is the natural starting point — no sharps or flats. The clearest key to hear chord quality in isolation.
Identify the Chord Quality on C
Each chord below is played on C. Listen and identify whether you heard Cm9, Cm, C7, or another quality — the hardest and most useful ear training skill.
Minor 9th in All 12 Keys
Other Chords in C
Related Extended
About the Cm9 Chord
The Cm9 chord is a minor 9th chord built on C. It contains the notes C, D#, G, A#, D — the root, third, fifth, seventh, and extensions.
Rich and soulful. A favourite in R&B and jazz voicings. Practising the Cm9 chord across different voicings and contexts builds the harmonic recognition that lets you identify it instantly in any musical setting — whether in a band mix, a recording, or a live performance.