Watch the Drones in D online guitar lesson by Joe Dalton from Fretboard Epiphanies

In this example, we are using the constant bass D and the first string open E which is part of the D major scale. The first string note in each of these chord forms is the third of the chord. The third determines whether the triad is major or minor. Since we are using the first string as a drone, we have eliminated the third. The major and minor chord forms now look the same. We have seen this in some of the previous examples.