The C-sharp major sixth-ninth chord is a lush and harmonically rich chord made up of the notes C♯, E♯, G♯, A♯, and D♯. Combining the brightness of the major triad with the warmth of the sixth and the airy extension of the ninth, the C-sharp major sixth-ninth chord creates a sophisticated and expansive sound. It is often used in jazz, soul, and contemporary music to add depth, color, and a sense of movement within chord progressions. This chord’s intricate blend of intervals offers both stability and melodic interest, making it ideal for expressive harmonic layering and smooth transitions.
Name: C-sharp major sixth-ninth chord
Notes: C♯, E♯, G♯, A♯, D♯
Intervals: 1, 3, 5, 6, 9
Chord symbol: C♯45906
Alternative symbols: C♯6add9, C♯6(add9)
Type: Pentad (five-note chord)
C-sharp major sixth-ninth chord on the Staff
C-sharp major sixth-ninth chord on Piano
C-sharp major sixth-ninth chord on Guitar
C-sharp major sixth-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.