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
Mobile disc jockey American Disc Jockey Awards Show was established, and its first edition was held in Las Vegas, Nevada. Since then, thirteen mobile DJs have been elected to the American Disc Jockey Hall of Fame. The thirteen members include John Rozz, Al Lampkin, Joe Martin, Robert A. Lindquist, Jon Michaels, Mike Buonaccorso, Sid Vanderpool, Bobby Morganstein, John Roberts, Ken Knotts, Ray "Ray Mar" Martinez, Cesar Cosio, and Bernie Howard-Fryman. The American Disc Jockey Awards Show annually recognizes and honors individuals who have given of themselves to benefit their community or a charitable cause in the name of the ADJA or the DJ