What is the C Minor 9 Chord?
Here's a fretboard view of the C Minor 9 chord so you can see where each chord tone lives across the neck.
Notes and Arpeggios
Minor 9th chords add the 9th to a minor 7th, producing a smooth, mellow, deeply soulful sound. This is quintessential Erykah Badu and D'Angelo territory — warm minor harmony with an extra layer of color. The complete chord tones are: C, Eb, G, Bb, D. The complete formula is 1, b3, 5, b7, and 9.
How to Use It
Extended voicings are a staple of jazz, neo-soul, and modern pop harmony. On bass, outline the harmony one note at a time. Start from the root and add the chord's actual degrees (b3, 5, b7, and 9) as the arrangement allows. The chord-tone boxes locate notes; the ordered arpeggio gives a playable route with explicit position shifts.
Target the root on beat 1 and use degree 5 or the root octave to stabilize the groove. Use the highlights to spot where the same tone repeats across strings.