The C minor ninth chord (Cm9) is a lush and expressive chord that extends the basic C minor seventh by adding a major ninth interval. Comprising the notes C, E♭, G, B♭, and D, it creates a rich, layered sound that is both warm and slightly tense, making it ideal for jazz, soul, and contemporary music. The addition of the ninth (D) provides harmonic color and emotional depth, allowing the C minor ninth chord to convey subtle complexity and sophistication within chord progressions. Its versatile and resonant quality makes it a valuable tool for musicians seeking to enhance the texture and expressiveness of their compositions.
Name: C minor ninth chord
Notes: C, E♭, G, B♭, D
Intervals: 1, ♭3, 5, ♭7, 9
Chord symbol: Cm9
Alternative symbols: C-9, Cmi9, Cmin9
Type: Pentad (five-note chord)
C minor ninth chord on the Staff
C minor ninth chord on Piano
C minor ninth chord on Guitar
C minor ninth chord on Ukulele
Rowan Ellis is a musician and educator with a passion for exploring the language of harmony and melody. With years of experience across classical, jazz, and contemporary styles, Rowan breaks down music theory into clear, practical insights. His goal is to make chords and scales less intimidating and more inspiring for every musician.