The A major ninth chord is a harmonically rich and elegant chord that builds on the major seventh by adding the ninth, creating a sound that is bright, smooth, and sophisticated. Its notes, A, C♯, E, G♯, and B, combine to produce a chord ideal for jazz, pop, and contemporary music, offering both melodic interest and harmonic depth. The inclusion of B adds a subtle extension that enhances the chord’s expressiveness, providing a sense of openness and fluidity in progressions. The A major ninth chord serves as a versatile and refined tool for musicians to craft lush, resonant, and emotionally compelling compositions.
Name: A major ninth chord
Notes: A, C♯, E, G♯, B
Intervals: 1, 3, 5, 7, 9
Chord symbol: Amaj9
Alternative symbols: AΔ9, Ama9, AMA9, AM9
Type: Pentad (five-note chord)
A major ninth chord on the Staff
A major ninth chord on Piano
A major ninth chord on Guitar
A 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.