It was music which had been brought up from the Mississippi delta by migrating post World War II Negroes and hardened and toughened and electrified and amplified to suit the dance halls and mean streets of Chicago, and it thrilled me to the very depths of my soul. To a dissolute white kid from the mean streets of a concrete housing estate, this music seemed tailored to echo the way that I felt - Fred McCormick on discovering The Best of Muddy Waters (on Pye International), in a world of Cliff Richard and Helen Shapiro