Rock and roll, a popular music craze of the mid-1950s, turned a loud, fast, and sexy set of sounds rooted in urban, black, working class, and southern America into the pop preference as well of suburban, white, young, and northern America. By the late 1960s, those fans and British counterparts made their own version, more politicized and experimental and just called rock—the summoning sound of the counterculture. Rock’s aura soon faded: it became as much entertainment staple as dissident form, with subcategories disparate as singer-songwriter, heavy metal, alternative, and “classic rock.” Where rock and roll was integrated and heterogeneous, rock was largely white and homogeneous, policing its borders. Notoriously, rock fans detonated disco records in 1979. By the 1990s, rock and roll style was hip-hop, with its youth appeal and rebelliousness; post‒baby boomer bands gave rock some last vanguard status; and suburbanites found classic rock in New Country. This century’s notions of rock and roll have blended thoroughly, from genre “mash-ups” to superstar performers almost categories unto themselves and new sounds such as EDM beats. Still, crossover moments evoke rock and roll; assertions of authenticity evoke rock. Because rock and roll, and rock, epitomize cultural ideals and group identities, their definitions have been constantly debated. Initial argument focused on challenging genteel, professional notions of musicianship and behavior. Later discourse took up cultural incorporation and social empowerment, with issues of gender and commercialism as prominent as race and artistry. Rock and roll promised one kind of revolution to the post-1945 United States; rock another. The resulting hope and confusion has never been fully sorted, with mixed consequences for American music and cultural history.
