What is a triad?
Three notes in 3rds
A triad is a chord of three notes. The notes are stacked a 3rd apart. C up to E is a 3rd, and E up to G is another.
Lines or spaces
On the stave a triad is easy to spot. Its notes sit on three lines in a row, or three spaces in a row.
Quick check
Where do the notes of this triad sit?
The tonic triad
The tonic triad is built on the tonic, the first note of the scale. It uses the 1st, 3rd and 5th degrees of the scale, with the tonic at the bottom. In C major that is C, E and G.
Quick check
In the tonic triad of C major, which note is the 5th?
Remember
- A triad is three notes stacked in 3rds.
- Three lines in a row, or three spaces in a row.
- The tonic triad: degrees 1, 3 and 5, the tonic at the bottom.