It's nineteen fifty-something, in a dark, cramped, smoke-filled room. Everyone's wearing black. And on-stage a tenor is blowing his heart out, a searching, jagged saxophone journey played out against a moody, walking bass and the swish of a drummer's brushes. To a great many listeners--from African American aficionados of the period to a whole new group of fans today--this is the very embodiment of jazz. It is also quintessential hard bop. In this, the first thorough study of the subject, jazz expert and enthusiast David H. Rosenthal vividly examines the roots, traditions, explorations and...