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The Tonic Triad of A Major

Updated: Aug 23, 2023

A triad is constructed of the first, third and fifth notes of the major scale

A major

1. Understand the Theory

  • A key signature is the sharp signs next to the clef. In this case we have F sharp, C sharp and G sharp. If you need help here please see the key signatures blog.

  • The tonic triad is the 1st , 3rd and 5th note of the scale.

  • When there is no key signature this triad requires an sharp sign in front of the C to make it a C sharp.

  • It does not need a F sharp or a G sharp as there is no F or C in the triad to raise by a semitone.

2. Watch the Reel

3. Download the Free Worksheet

A major
Download PDF • 483KB

4. Play the triad on a piano or keyboard app.

Update: 23/08 a sharp added to the worksheet that was initially missed. Thank you to Ava and Ruthie for spotting it.


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