Rock and roll
The form of popular music that came to prominence in the USA in the 1950s.
The Disc jockey Alan Freed is given credit for popularising the term and he had a radio show called 'Moondog's Rock'n'Roll Party' in 1951. The 1934 film Transatlantic Merry Go Round included the song 'Rock and Roll'. The term had been used by the black community in England, referring to sexual congress, well before this.