Cleveland of Alan Freed − the Cleveland disc jockey credited with first using and popularizing the term "rock and roll" to describe the music genre. News/talk station WHK was one of the first radio stations to broadcast in the United States and the first in Ohio; its former sister station, rock station WMMS, dominated Cleveland radio in the 1970s and 1980s and was at that time one of the highest rated radio stations in the country. In 1972, WMMS program director Billy Bass coined the phrase "The Rock and Roll Capital of the World" to describe Cleveland. In 1987, "Playboy" named
Canadian Disc Jockey Association 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. Its members either belong to one of many chapters in major cities across Canada or in some cases, where there is not one nearby, they are known as "unchaptered" or National members. The CDJA has established a code of conduct specifying the