D9 guitar chord
Root, third and seventh: the guide tones fix the quality, so the fifth is dropped. That is what leaves a string free, so pick a tension to put on top.
- Tap a note to hear it
- Arrows change position
- Fingers, notes or intervals
- Play the chord
About D9 — shell voicings
D9 is D, F#, A, C and E — D7 with the ninth stacked on top.
It sounds bright and full, still clearly pulling. The ninth adds height without softening the tritone underneath it, which is why funk and soul comp on this rather than on a plain 7.
D9 notes and formula
| D | F# | A | C | E |
|---|---|---|---|---|
| 1 | 3 | 5 | ♭7 | 9 |
Dominant — the same pull as a 7, with more colour.
Also written Ddom9 or D dominant 9. The same chord either way; which spelling you meet depends on who wrote the chart.
How to play D9
Root, third and seventh. The third and seventh, the guide tones, are what make the chord major, minor or dominant, so the fifth can go: it says nothing the symbol needs.
Three notes means a spare string, which is the real point. Put a tension on it.
D9 has 3 of them, on the middle four strings, the bottom four strings and the top four strings, from the 4th fret up to the 11th — all in one inversion, so the bass note never moves. The one to learn first is the D shape at the 4th fret, which is the easiest grip here.
Start with 10-9-10-9-x-x — no barre. None of the shapes for D9 uses an open string, so every one of them is movable; the lowest sits at the 4th fret. 6 of the 9 need a barre. Together they cover the neck from the 4th fret to the 14th.
| Frets | Where | Bass | Top | Hand |
|---|---|---|---|---|
| x54555 | 4th fret | D, root position | A | barred |
| x70778 | 7th fret | E, 9th in the bass | C | barred |
| x77778 | 7th fret | E, 9th in the bass | C | barred |
| 10-7-7-9-7-8 | 7th fret | D, root position | C | barred |
| 10-9-10-9-x-x | 9th fret | D, root position | E | all fretted |
| 10-12-10-9-10-12 | 9th fret | D, root position | E | barred |
| 10-12-10-11-10-12 | 10th fret | D, root position | E | barred |
| x-x-12-11-13-12 | 11th fret | D, root position | E | all fretted |
| 14-x-12-14-13-12 | 12th fret | F#, 1st inversion | E | all fretted |
The same notes rebuilt from scratch give 12 drop 2, 8 drop 3, 13 rootless and 6 open string voicings, each on its own page.
Tensions. A shell of D9, root, third and seventh, leaves a string free, and the tones that belong over it are the #11 (G#), the b13 (Bb) and the 13 (B).
How to use D9
D9 is the V of G, and that is where it goes if it goes anywhere: the third and the flat seventh are a tritone apart, and both resolve by a semitone into G.
Voice by voice, D9 → G. 2 voices move by a semitone, and one note is common to both chords.
| In D9 | Moves | In G |
|---|---|---|
| D, the root | stays where it is | D, the fifth |
| F#, the major third | rises a semitone | G, the root |
| A, the fifth | falls a whole tone | G, the root |
| C, the flat seventh | falls a semitone | B, the major third |
| E, the ninth | falls a whole tone | D, the fifth |
In which keys. Every note of D9 belongs to E minor (the ♭VII) and G major (the V, the dominant).
What to play over D9
Every note of D9 is in D mixolydian and D lydian dominant.
Chords near D9
Change one note of D9 and you have Dmaj9 (the flat seventh becomes a major seventh), Dm9 (the major third becomes a minor third), Dadd9 (drop the flat seventh), D69 (the flat seventh becomes a sixth), D7 (drop the ninth) or D9b5 (the fifth becomes a flat fifth).
D9 is a dominant chord — root, major third, fifth, minor seventh. Dominant seventh chords on every root.
On D9’s sound and use this page follows Mark Levine, The Jazz Theory Book (Sher Music, 1995). The shapes and the derived voicings come from different places, and both are explained in where the chords and the theory come from.