1950s in music Pop. In 1951, Cleveland, Ohio disc jockey Alan Freed began playing rhythm and blues music for a multi-racial audience, and is credited with first using the phrase "rock and roll" to describe the music. The 1950s saw the growth in popularity of the electric guitar (developed and popularized by Les Paul). Paul's hit records like "How High the Moon", and "The World Is Waiting for the Sunrise", helped lead to the development of a specifically rock and roll style of playing of such exponents as Chuck Berry, Link Wray, and Scotty Moore. Chuck Berry, who is considered to be one
Canadian Disc Jockey Association professional values and high standards that members are expected to follow. Individuals can apply for CDJA membership only after they have submitted a signed acknowledgement that they will conform to and operate within the code. The CDJA has 11 chapters across Canada. Canadian Disc Jockey Association The Canadian Disc Jockey Association (CDJA) is a not-for-profit trade association for disc jockeys across Canada. The CDJA was formed in 1976 and incorporated in 1978 to serve not only the disc jockey trade but the consumer, as well. It is a self-regulating association and operates under a national constitution and code of ethics.