Here's how to play F major triad on bass guitar. We're gonna take our 3 notes from the F-major scale. The root, the 3rd note from the scale, and the 5th note from the scale. Our root in this case is F. Our 3rd note from the scale is A, and our 5th note from the scale is C. Our root is gonna be F, first fret on the E string. Our 3rd is gonna be the open A string, our 5th will be C, 3rd fret on the A string. Our next F, we're gonna play 8th fret on the A string. The A is right next to it, 7th fret on the D string. C is 10th fret on the D string, and our high F is right next to it, 10th fret on the G string. Here's the 2 octave, F major triad. And that's the F major triad on the electric bass.