A radio personality is a person who has an on-air position in radio broadcasting. A radio personality that hosts a radio show is also known as a radio host, and in India and Pakistan as a radio jockey. Radio personalities who introduced and played individual selections of recorded music were originally known as disc jockeys before the term evolved to describe a person who mixes a continuous flow of recorded music in real time. Broadcast radio personalities may include Talk radio hosts, AM/FM radio show hosts, and Satellite radio program hosts. Notable radio personalities include pop music radio hosts Martin Block, Alan Freed, Dick Clark, Wolfman Jack, and Casey Kasem, shock jock's such as Howard Stern, as well as sports talk hosts such as Mike Francesa and political talk hosts such as Rush