Watch the Laid Back Double Shuffle online guitar lesson by Jasper Mortier from 50 Blues Bass Licks You Must Know
I Wonder Why' by Freddie King is a beautiful example of this way of playing a double - single note shuffle. It's with Jerry Jemmott on bass! And you also should listen to an all time favorite band of mine: Hound Dog Taylor & the Houserockers. There's no bass guitar, but bass is being played on tuned down guitars (often to Db for instance) by Brewer Phillips and Hound Dog.