A phrase in D major
- D
- A7
- A7
- D
Hear A7 in a tonic–chord–dominant–tonic phrase. Its role depends on its position, not just its quality.
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Selected:A3D♭4E4G4
- Root
- 3rd / sus
- 5th
- 7th
- 6th / extensions
A7
A dominant seventh
A major triad with a minor seventh, creating tension that wants to resolve.
- Chord tones
- A1 · RootC♯3 · 3rdE5 · 5thG♭7 · 7th
- Formula
- 1–3–5–♭7
- Root / bass
- A / A
- Notes played (low → high)
- A3 · D♭4 · E4 · G4
A7 · dominant seventh
How to Use This Chord
Sound & role
Tension that can resolve a fourth upward to a major or minor chord.
Genre examples
Blues
Jazz
Pop
Examples of musical settings, not restrictions or claims about how often this chord appears.
Connection & passing potential
No specific chromatic passing use is established by these notes alone. A passing function requires a starting chord, a destination and voice movement.
Diatonic context · example keys
Every chord tone fits these example keys. Other keys may also fit; the chord root is not assumed to be the tonic.
D major · V7
major
D minor · V7
harmonic minor, ascending melodic minor