Hagen has released 15 studio albums from 1978 to 2011. Her 1982 single “Smack Jack” reached #7 in Norway and 1983’s “New York / N.Y.” reached #9 on the U.S. Dance chart. As an actress Hagen first appeared in the television series ABC der Liebe in 1974. In 2004 she starred in the film 7 Dwarves – Men Alone in the Wood as The Evil Queen and her daughter Cosma played Snow White. Hagen has done voice acting work and is scheduled to star in the upcoming 2015 film Desire Will Set You Free.