Watch the Pentatonic Approach #2 online guitar lesson by Brad Carlton from Guitar Lab: The I bVII IV Progression

In this approach, we'll use two different pentatonic scales to accommodate two of the three chords in this progression. This is not as hard as it sounds because the D major pentatonic scale and the G major pentatonic scale share four common tones. The note that changes is the F sharp to G. By focusing on that one change, you can get up and running and using a vertical approach in your soloing without being bogged down with multiple note changes.