A7 (A dominant 7th): A C# E G. Formula 1 3 5 ♭7. A major triad with a minor 7th: the tritone between its 3rd and ♭7 pulls toward the tonic. The V chord of every key, and the I chord of the blues.
Made of4
Contains & part of19
Inversions4
- A77
Root position · A C# E G
- A7/C#6/5
1st inversion · C# E G A
- A7/E4/3
2nd inversion · E G A C#
- A7/G4/2
3rd inversion · G A C# E