Watch the Just Add C online guitar lesson by Brad Carlton from Chord Studies: Pedal Tones Vol. 1
This example is a vi-IV progression in the key of C and is played in the fifth position. We start by playing the top four strings of an Am barre chord. Then all we have to do is raise the E to an F for our F/A chord. We'll repeat these two chords but with the C note on top this time.