Watch the 12-bar Chicago shuffle in A online guitar lesson by David Hamburger from Blues Guitar For Beginners
The eighth note shuffle feel has a long history on the guitar, going back at least as far as Robert Johnson, who himself may have been one of the first guitarists to adapt this sound from the barrelhouse pianists working the Mississippi Delta circuit in the 1930s. Postwar Chicago bluesmen then translated Johnson's groove to the electric guitar, which was in turn reinterpreted by influential British Invasion musicians like the Rolling Stones. No barrelhouse pianists, no Black Crowes. Sobering, isn't it?