Murray Kaufman, professionally known as Murray the K, was an influential rock and roll impresario and disc jockey of the 1950s, 1960s and 1970s. During the early days of Beatlemania, he frequently referred to himself as the fifth Beatle.
In the late 1940s and early 1950s, he worked in public relations and as a song plugger, helping to promote tunes like Bob Merrill's "How Much Is That Doggie In The Window." From there, he worked as a radio producer and co-host at WMCA (and briefly thereafter at WMGM), working with personalities such as Laraine Day on the late night interview program Day at Night and with Eva Gabor. At the same time, he was doing promotion for several baseball players, including Mickey Mantle and Willie Mays, and his radio beginnings may be attributable to his connection with the New York Giants, whose manager, Leo Durocher, was the husband of Laraine Day. His work on those shows earned him his own late-night show that often featured his wife as co-host, as was popular at the time. For a while in the 1950s he was president of the National Conference of Disk Jockeys.