The blues revival of the early 1960s brought new life to a seminal genre of American music and inspired a vast new world of singers, songwriters, and rock bands. The Rolling Stones took their name from a Muddy Waters song; Led Zeppelin forged bluesy riffs into hard rock and heavy metal; and ZZ Top did superstar business with boogie rhythms copped from John Lee Hooker. Crossroads tells the myriad stories of the impact and enduring influence of the...