Watch the Sliding 4ths online guitar lesson by Rich Maloof from 50 Acoustic Guitar Licks You MUST Know

The doublestop 4ths here are similar to the shapes used in our "Silver Hammers" example but notice how they get a nice bluesy edge when you slow 'em down and slide 'em around. A similar phrase wraps the acoustic lead opening Pink Floyd's "Wish You Were Here." Notice that the resolving G-B doublestop is an interval of a 3rd rather than a 4th.