A C major triad is made up of three notes from our C major scale. C, our root, E, our third and G our fifth. Our first note C is on the third fret of the A string. Second note E is on the second fret of the D string. And then, we can play our open G. Now, we can play our second octave by moving up the tenth fret on the D string for our C. E is the ninth fret right under your first finger of the G string. And we can play G at the double dot 12th fret on the G string. Now, we can reach up for our C if we want at the 17th fret on the G string. Here's a demonstration of the two octave C triad on the bass guitar.