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
Origins of rock and roll to the phrase being taken as a double entendre, with the interpretation as religious or sexual. The following year, Western swing musician Buddy Jones recorded "Rockin' Rollin' Mama", which drew on the term's original meaning – "Waves on the ocean, waves in the sea/ But that gal of mine rolls just right for me/ Rockin' rollin' mama, I love the way you rock and roll". In August 1939, Irene Castle devised a new dance called "The Castle Rock and Roll", described as "an easy swing step", which she performed at the Dancing Masters of America convention at the Hotel Astor.