A7
A7 is a dominant seventh chord made of A–C♯–E–G. Its major third and minor seventh distinguish it from both a major seventh chord and a plain major triad.
NotesA · C♯ · E · G
Formula1 · 3 · 5 · ♭7
AliasesAdom7
Voice leading
A7 → D
- Common tones
- A
- Moving voice
- C♯ → D · G → F♯
C♯ moves up a semitone to D and G moves down a semitone to F♯, while A remains as a common tone. This three-note voicing omits E.
A7
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