Piano Lessons AppTake the quiz

A dominant 7th chord on piano

A7 is a dominant 7th chord built on A. It uses the notes A - C♯ - E - G and sounds bluesy with a strong pull toward the next chord.

A dominant 7th chord keyboard diagram: A, C♯, E, GAEGC♯
Notes
A C♯ E G
Formula
1 - 3 - 5 - ♭7
Right hand fingering
1 - 2 - 3 - 5
Left hand fingering
5 - 3 - 2 - 1
Chord symbol
A7

How to play A7 step by step

  1. Find A. A is the white key between the second and third black keys of the group of three.
  2. Add C♯, 4 half steps above A.
  3. Add E, 7 half steps above A.
  4. Add G, 10 half steps above A.
  5. Press all 4 keys together with fingers 1 - 2 - 3 - 5 of your right hand. Keep your wrist level and let the weight of your arm do the work.

A7 inversions

An inversion uses the same notes in a different order. Inversions let your hand move less between chords, which is how pianists make chord changes sound smooth.

A7 Root position: A, C♯, E, GAEGC♯
Root positionA - C♯ - E - G
A7 1st inversion: C♯, E, G, AEGAC♯
1st inversionC♯ - E - G - A
A7 2nd inversion: E, G, A, C♯EGAC♯
2nd inversionE - G - A - C♯
A7 3rd inversion: G, A, C♯, EGAEC♯
3rd inversionG - A - C♯ - E

Frequently asked questions

What notes are in the A dominant 7th chord?

The A dominant 7th chord (A7) contains 4 notes: A, C♯, E, G. Its formula is 1 - 3 - 5 - ♭7.

How do you play A7 on piano?

Put your right-hand thumb on A and play A, C♯, E, G together using fingers 1 - 2 - 3 - 5. With the left hand, use fingers 5 - 3 - 2 - 1.

Other A chords

Other dominant 7th chords