Rock concert that fused country music, blues, and swing genre to produce the earliest examples of "rock and roll." The coining of the phrase, "rock and roll," is often attributed to American, Alan Freed, a disk jockey and concert promoter who organized many of the first major rock concerts. Since then, the rock concert has become a staple of entertainment not only in the United States, but around the world. The term 'rock concert' is also occasionally used to refer to live performances by distinctly non-rock acts. Live performances by pop, hip-hop, and R&B bands may not be rock concerts in 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.