D7 Chord on Ukulele
D7 = D – F# – A – C (Root, Major 3rd, Perfect 5th, Minor 7th)
D7 grows directly out of the D major barre shape: the index finger still lies flat across three strings — G, C, and E — at fret two, but the A string, left open for D major, now gets fretted at the third fret by the ring finger. It's the first ukulele seventh chord that keeps a partial barre in place while adding an independent finger on top of it, which makes it a genuinely useful test of whether the D major barre technique has actually become solid.
This is the dominant seventh built on D, functioning as the V7 chord in the key of G — one of the most-used cadential chords on the instrument given how common G major is as a ukulele key. Its sound carries more tension than the plain D triad, with the added minor seventh creating the same kind of pull toward resolution that G7 has toward C, just transposed a fourth away. Because the barre is retained and only one extra finger is added, D7 also demonstrates clearly how a dominant seventh is often just a triad plus one more carefully placed note, rather than a wholly different shape. Compared to G7, C7, and A7's mostly open, low-fret voicings, D7 stands out as the one common seventh chord in this group that still requires a barre, making it a slightly more advanced milestone even though its harmonic role is just as fundamental.
Fingerings
Open Position
How to Practice It
The main coordination challenge is keeping the barred index finger flat and steady while the ring finger reaches independently for the third fret on the A string, a full fret higher than the barre — since both fingers are close together, it's easy for the ring finger to accidentally flatten and mute the barred strings beneath it. Arch the ring finger high and keep its contact point narrow. Practicing D-to-D7-to-G captures this chord's main real-world job. If the reach feels unstable at first, practice placing the barre alone, strumming to confirm all three barred strings ring clearly, and only then add the ring finger on top — isolating the two motions before combining them. Once comfortable, try the full G-C-D7-G loop, substituting D7 for the plain D triad, and compare how the added tension changes the progression's pull back to G.
Common Progressions
- V7 – I (D7 – G)
- I – IV – V7 – I (G – C – D7 – G)
- ii – V7 – I (Am – D7 – G)
- Alternating just G and D7 makes a workable two-chord practice loop.
FAQ
- How does D7 relate to D major's shape on ukulele?
- It reuses the same three-string barre at the second fret and adds one more finger, the ring finger, on the A string's third fret, where D major simply leaves that string open.
- Why is D7 useful in the key of G?
- It's the V7 chord, giving a stronger resolution pull into G major than the plain D triad, thanks to the added seventh's tritone tension against the chord's third.
- Is D7 harder than plain D major?
- Slightly — it keeps the same three-string barre D major uses but adds an independent ring-finger reach on the A string, so it's a genuine test of whether the underlying barre technique is solid.
- Does D7 appear outside the key of G?
- Yes — as a secondary dominant it can briefly tonicize G even inside a song centered on C or D, adding a moment of extra pull before the progression settles back into its main key.
- Why is D7 considered more advanced than G7, C7, or A7?
- It's the only one of the four common open dominant sevenths that still requires a barre across three strings, where the other three are built from mostly open, single-finger or two-finger shapes.
- What's a good sign that the D7 barre needs adjusting?
- A muted or buzzing E string is the most common tell — check that the index finger presses evenly along its whole length rather than harder near one edge, which is easy to do while also reaching the ring finger up for the seventh.
- Can D7 be played without a barre at all?
- Yes — the same three separate-finger approach some players use for plain D major works here too, adding the ring finger's third-fret note on the A string on top of three individually placed fingers rather than one flat barre.
D7 on other instruments: D7 on Guitar, D7 on Piano. Related: how chords are built, chord finder.