The D dominant ninth chord, abbreviated as D9, is a five-note chord that extends the D dominant seventh (D7) by adding a major ninth (E), resulting in the notes D, F♯, A, C, and E. This chord is constructed by stacking the intervals of a root (D), major third (F♯), perfect fifth (A), minor seventh (C), and major ninth (E). The inclusion of the ninth adds a rich, jazzy flavor to the chord, making it a staple in genres like jazz, blues, and funk. In the key of D, the D9 chord functions as a dominant seventh chord, typically resolving to the tonic (I) chord. On the guitar, it can be played in various voicings, with one common fingering being xx0210. The D9 chord’s distinctive sound has earned it a reputation for adding depth and complexity to chord progressions.
Name: D dominant ninth chord
Notes: D, F♯, A, C, E
Intervals: 1, 3, 5, ♭7, 9
Chord symbol: D9
Type: Pentad (five-note chord)
D dominant ninth chord on the Staff
D dominant ninth chord on Piano
D dominant ninth chord on Guitar
D dominant 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.