Origins of rock and roll roll was set by disc jockey Alan Freed's use of the term in his groundbreaking "The Rock and Roll Show" on New York's WINS in late 1954, as well as at his "Rock and Roll Jubilee Balls" at St. Nicholas Arena in January 1955, they chose to judge their candidates according to the music Freed spotlighted: R&B combos, black vocal groups, honking saxophonists, blues belters, and several white artists playing in the authentic R&B style (Bill Haley, Elvis Presley). The artists who appeared at Freed's earliest shows included orchestra leader Buddy Johnson, the Clovers, Fats Domino, Big Joe Turner, the
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.