Watch the Chord Inversions for I IV V IV in G over G Pedal online guitar lesson by Brad Carlton from Guitar Lab: Vertical Soloing

Close voicings are applied for the G, C/G, and D/G chords using the 2 3 4 string group. I'll arpeggiate the chords to provide texture, and then I'll use the 2 to 3 and the 4 to 3 moves to create piano style sounds. The 4 to 3 move will not be played over the C/G because it would be non-diatonic.