SOCIOLOGICAL SIGNIFICANCE  Since its inception in the 1950s, rock music has moved from the margins of American popular music to become the center of a multi-billion-dollar global industry. Closely connected with youth culture, rock music and musicians have helped to establish new fashions, forms of language, attitudes, and political views. However, rock music is no longer limited to an audience of teenagers, since many current listeners formed their musical tastes during the golden age of rock and roll. Similarly, while rock has historically encouraged new creative expressions, the innovations of Chuck Berry, Elvis Presley, Bob Dylan, the Beatles, and Jimi Hendrix have defined a tradition to which successive generations of musicians have repeatedly turned for inspiration.

From its origins, rock music has been shaped by a complex relationship between freedom—symbolized by the image of the rebellious rock musician—and corporate control. Originally a mixture of styles outside the mainstream of white middle-class popular taste, rock and roll soon became a mass-produced commodity. This tension between individuality and commercialism still looms large in rock music and is reflected in fan distaste for musicians who compromise, or sell out, their musical values in order to secure multi-million-dollar recording contracts. Shaped by technology, the growth of the mass media, and the social identities of its artists and audiences, rock music continues to play a central role in the popular culture of the United States and, increasingly, the world.