A triad is constructed of the first, third and fifth notes of the major scale
B 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, G sharp, D sharp and A 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 F and D to make an F sharp and a D sharp.
It does not need a C sharp, G sharp or a A sharp as there is no C, G or A in the triad to raise by a semitone.
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2. Watch the Reel
3. Download the Free Worksheet
B Major Tonic Triad
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