Jan Torsten Svensson, known professionally as Harpo, is a Swedish pop singer. He was popular in Sweden and around Europe in the 1970s and is best known for his worldwide hits "Moviestar" (1975) and "Horoscope" (1976). Harpo continued to work in the music business into the 2000s, releasing an album of new material in 2005 and continued to tour. He remains popular in Germany and has toured there since 2007.

Arthur "Harpo" Marx was an American comedian, actor, mime artist, and harpist, and the second-oldest of the Marx Brothers. In contrast to the mainly verbal comedy of his brothers Groucho and Chico, Harpo's comic style was visual, being an example of vaudeville, clown and pantomime traditions. He wore a curly reddish blond wig and was silent in all his movie appearances, instead blowing a horn or whistling to communicate. Marx frequently employed props such as a horn cane constructed from a lead pipe, tape, and a bulbhorn.