Cm9 is C, Eb, G, Bb and D. It keeps every note of and adds the .
In a ii–V, use Cm9 in place of when you want the 9th included.
Unlike , Cm9 keeps the already found in .
To hear the 9th, compare with Cm9.
One repeated root rises two frets to the 9th. Every other note stays the same.
Also written Cmin9, C-9 or C minor 9.
Jazz players rarely leave a ii–V–I as bare sevenths: Cm9, F13, Bbmaj9. The ninth on top of the ii is already the V’s thirteenth, so it holds over the barline before falling a step to the ninth of the I.
Listen for: The ninth holds as the V’s thirteenth, then falls a whole step. On the plain m7 that string starts on the root and has to climb.
Leave the root off Cm9 and the four notes left are Ebmaj7. So the I can turn into the vi without moving a finger above the bass, a tonic swap jazz players make freely.
Listen for: Nothing above moves. A bass note arrives a minor third below the I’s root, and the chord is minor.
In which keys. Every note of Cm9 belongs to C minor, Eb major, G minor and Bb major.
Contains Cm9 and adds eleventh and flat thirteenth.
Contains Cm9 and adds eleventh and thirteenth.
The common shapes and the derived voicings come from different places, and both are explained in how this site is built.
Shows each chord the way this style would voice it, and marks which of its alternatives belong to the idiom.