The D major sixth-ninth chord, often abbreviated as D6/9, is a five-note chord that extends the D major triad by adding both the major sixth (B) and major ninth (E) intervals. Constructed from the notes D, F♯, A, B, and E, it encompasses the root (1), major third (3), perfect fifth (5), major sixth (6), and major ninth (9) degrees of the D major scale. This chord is known for its rich, open, and harmonious sound, blending the brightness of the major triad with the added color tones of the sixth and ninth. Commonly used in jazz, pop, and soft rock, the D6/9 chord can evoke a sense of warmth and sophistication in musical compositions. On the guitar, it can be played in various voicings, with one common fingering being xx0202, where the open D string is played along with the F♯, A, B, and E notes. This chord’s versatility and pleasing tonal quality make it a valuable addition to a musician’s harmonic repertoire.
Name: D major sixth-ninth chord
Notes: D, F♯, A, B, E
Intervals: 1, 3, 5, 6, 9
Chord symbol: D45906
Alternative symbols: D6add9, D6(add9)
Type: Pentad (five-note chord)
D major sixth-ninth chord on the Staff
D major sixth-ninth chord on Piano
D major sixth-ninth chord on Guitar
D 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.