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.
D7sus4 is D, G, A and C — D7 with the third replaced by the fourth.
It sounds leaning rather than shoving. It keeps the flat seventh’s pull and loses the tritone, so it moves without making a hard cadence.

| D | G | A | C |
|---|---|---|---|
| 1 | 4 | 5 | ♭7 |
Dominant — it points a fifth down, but softly.
Also written D7sus or D dominant 7 sus 4. The same chord either way; which spelling you meet depends on who wrote the chart.
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.
D7sus4 has 6 of them, on the low-middle three, the bottom three strings, strings 5-3-2 and strings 6-4-3, from open position up to the 10th — all in one inversion, so the bass note never moves. The one to learn first is the D shape at the 5th fret, which is the easiest grip here.
Start with xx0213 — no barre and 1 open string. 1 of the 7 shapes here sits in open position. 3 of the 7 need a barre. Together they cover the neck from the 1st fret to the 15th.
| Frets | Where | Bass | Top | Hand |
|---|---|---|---|---|
| xx0213 | open position | D, root position | G | 1 open string |
| x55533 | 3rd fret | D, root position | G | barred |
| x57585 | 5th fret | D, root position | A | barred |
| xxx788 | 7th fret | D, root position | C | all fretted |
| xx7788 | 7th fret | A, 2nd inversion | C | all fretted |
| 10-12-10-12-10-10 | 10th fret | D, root position | D | barred |
| x-x-12-14-13-15 | 12th fret | D, root position | G | all fretted |
The same notes rebuilt from scratch give 15 drop 2, 10 drop 3 and 6 open string voicings, each on its own page.
Tensions. A shell of D7sus4, root, third and seventh, leaves a string free, and the tones that belong over it are the 9 (E) and the 13 (B).
Voice by voice, D7sus4 → G. One voice moves by a semitone, and 2 notes are common to both chords.
| In D7sus4 | Moves | In G |
|---|---|---|
| D, the root | stays where it is | D, the fifth |
| G, the fourth | stays where it is | G, the root |
| A, the fifth | falls a whole tone | G, the root |
| C, the flat seventh | falls a semitone | B, the major third |
In which keys. Every note of D7sus4 belongs to C major (the ii), D minor (the i), E minor (the ♭VII), F major (the vi), G major (the V), G minor (the v), A minor (the iv) and Bb major (the iii).
Every note of D7sus4 is in D minor pentatonic, D blues, D mixolydian, D dorian and D natural minor.
Change one note of D7sus4 and you have Dsus4 (drop the flat seventh), Dsus2sus4 (the flat seventh becomes a ninth), Dm7 (the fourth becomes a minor third), D7 (the fourth becomes a major third), D11 (add the ninth) or D/C (the fourth becomes a major third).
D7sus4 is a suspended chord — root and fifth, with a second or fourth where the third would be — or nothing at all. Suspended and power chords on every root.
On D7sus4’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.
Shows each chord the way this style would voice it, and marks which of its alternatives belong to the idiom.