Watch the Shuffle: Ex. 3a online guitar lesson by Andy Aledort from Kings of Rock & Roll Vol. 1: Johnny Winter

Johnny Winter is one of the greatest shuffle players ever, displaying an innate ability to spin endlessly interesting, hard-driving improvised lines that push the music forward. Most of the lines here are based on E minor pentatonic (E G A B D), starting in "open" position (within the first three frets and utilizing open strings) and in a style inspired by the acoustic playing of Lightnin' Hopkins.