The A major sixth-ninth chord is a lush and complex chord that blends the stability of a major triad with the added richness of both the sixth and ninth intervals. Its notes, A, C♯, E, F♯, and B, create a harmonically dense sound that is simultaneously bright, jazzy, and sophisticated. The F♯ and B extensions add color and tension without overpowering the core major tonality, making this chord ideal for creating smooth, expressive progressions in jazz, pop, and contemporary music. Guitarists and pianists often use the A major sixth-ninth chord to inject elegance and depth into their arrangements, giving compositions a warm and resonant character.
Name: A major sixth-ninth chord
Notes: A, C♯, E, F♯, B
Intervals: 1, 3, 5, 6, 9
Chord symbol: A45906
Alternative symbols: A6add9, A6(add9)
Type: Pentad (five-note chord)
A major sixth-ninth chord on the Staff
A major sixth-ninth chord on Piano
A major sixth-ninth chord on Guitar
A 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.