D7 guitar chord

D7 (D seventh) is built from D, F#, A and C, the degrees 1–3–5–b7. On guitar, the main shape is x x 0 2 1 2, the first diagram, marked with the star.

You know when you climb stairs in the dark and count one step too many? Your foot hangs there, waiting for a floor that never came. Tap the player below: D7 is that foot in the air.

Hear D7 before you play

Why D7 sounds this way

Why does it sound unfinished? Inside D7, two notes are at odds: F# and C. Play the arpeggio again, no rush and catch the second and the last note — the distance between them is the tritone, one of the tensest intervals in tonal music. D and A keep the house standing while those two argue inside it. And an argument, you know, demands a resolution.

How to play D7 on guitar

On the guitar, six strings give the chord room to breathe — some positions use them all, others ask you to mute the lowest ones. So grab the first position below — 1 open string to help you; it's the main shape — that's why it carries the ⭐. Now the experiment that explains this chord better than any explanation: play D7, hold it for one breath, then play G. Felt the door close? Do it again. That relief is the dominant's job.

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Save the positions below for when the blues calls: over there, this chord is the house language.

D7 notes and degrees

D7 stacks the root D, the major third F#, the perfect fifth A and the minor seventh C.

Where D7 shows up

Its most common job is the dominant, and dominants live as VII7 in E minor, V7 in G major. Translation: wherever it shows up, the music is usually about to move. In the blues, though, D7 can also be the home chord. A chart full of 7th chords is a song that won't sit still.

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Where D7 usually goes

When D7 works as the dominant of G, it usually resolves to G or GmGmGmGm. In other contexts the sequence changes: in the blues, D7 can be the home chord itself. It's a tendency, not a law.

Going beyond D7

For soloing, D Mixolydian (D E F# G A B C · 1 2 3 4 5 6 b7: the major scale with a lowered seventh — the blues accent); D Lydian dominant (D E F# G# A B C · 1 2 3 #4 5 6 b7: a mixolydian with a raised fourth: the dominant in formalwear) cover the whole chord. And look at the first swap on the list below: that's the famous tritone substitution, a second dominant hiding three whole steps away, the one arrangers reach for when they want to arrive at the same place by a prettier road.

Scales to improvise over D7

The D Mixolydian scale is a common choice over D7: it contains every note of the chord. The best fit depends on the key, the surrounding chords and the tensions you want. When D7 moves to G, its third, F#, is the leading tone of G: the note that wants to rise a half step.

Swaps that work:

• Ab7Ab7Ab7Ab7 — Tritone substitution (shared 3rd–7th tritone)
• Am7Am7Am7Am7 — Forms a II–V: precede with this ii
• Ebdim7 — Passing diminished (ascending)

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D7 jazz voicings

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You already know how this sentence usually ends. As a dominant, the period after D7 is G — go there and close it with your own fingers.

Updated October 20, 2026