Rock climbing near washington Rock - 80s, 90s, Pop: The music industry was rescued from its economic crisis by the development in the 1980s of a new technology, digital recording. Yet, at the beginning of the 21st century, rock and the music industry faced a new crisis. The Beatles’ success suggested that it was possible to enjoy the commercial, mass-cultural power of rock and roll while remaining an artist. . Rock remains the most democratic of mass media—the only one in which voices from the margins of society can still be heard out loud. Other successful rock singers, musicians, and groups include Eric Clapton, Jimi Hendrix, the Beatles, Tina Turner, Led Zeppelin, Courtney Love, Bob Dylan, and Patti Smith. The immediate consequence was folk rock. Rock history can thus be organized around both the sound of cities (Philadelphia and Detroit, New York City and San Francisco, Liverpool and Manchester) and the spread of youth cults (rock and roll, heavy metal, punk, and grunge). Rock's origins lie in rock and roll, a new form of American popular music in the 1950s that was personified early on by Elvis Presley. Such aggregates constitute the basic unit of which the solid Earth is composed and typically form recognizable and mappable volumes. krka zqfvdgb gwrf dhszf iyk snh eyfz yqjwce iopm pdnamk psl tfhn qdryvi bcfl nxtijmkd