Origins of rock and roll but it was used by the early 20th century, both to describe a spiritual fervor and as a sexual analogy. Various gospel, blues and swing recordings used the phrase before it became used more frequently – but still intermittently – in the late 1930s and 1940s, principally on recordings and in reviews of what became known as "rhythm and blues" music aimed at black audiences. In 1951, Cleveland-based disc jockey Alan Freed began playing this music style while popularizing the term "rock and roll" to describe it. Various recordings that date back to the 1940s have been named as the
The History of Rock and Roll Rolling Stone magazine not only released a book with this phrase ("The Rolling Stone Illustrated History of Rock & Roll"), but also had an early-1980s weekly radio series with some similarities to the classic 1978 special ("Rolling Stone's Continuous History of Rock & Roll"). The award-winning 1978 version of the show opened with a quick reverse "Time Sweep", featuring clips from selected songs from the 1970s backwards to the 1950s. It covered the 1950s, 1960s, and 1970s, and closed with a "A Top Ten of Rock & Roll" followed by the "Ending Time Sweep": The "time sweep" is a 53-minute