The C major ninth chord (Cmaj9) is a lush and harmonically rich chord that extends the C major seventh by adding a major ninth interval. Comprising the notes C, E, G, B, and D, it produces a warm, sophisticated sound that is often used in jazz, pop, and contemporary music to add depth and color to chord progressions. The inclusion of the ninth (D) introduces a subtle tension and melodic interest, enhancing the expressive quality of the C major ninth chord. Its versatile and elegant tonal character makes it ideal for creating smooth, flowing harmonies and adding emotional richness to musical compositions.
Name: C major ninth chord
Notes: C, E, G, B, D
Intervals: 1, 3, 5, 7, 9
Chord symbol: Cmaj9
Alternative symbols: CΔ9, Cma9, CMA9, CM9
Type: Pentad (five-note chord)
C major ninth chord on the Staff
C major ninth chord on Piano
C major ninth chord on Guitar
C major 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.