German songwriter and music producer best known for being a part of the group Modern Talking from 1984 to 1987 and from 1998 to 2003.
Before he was in Modern Talking, he was a member of the band Monza in 1978 and the pop trio Sunday in 1981.
He produced music for several popular artists, including Anna Garcia and the pop group Touché.
He was married to Erika Sauerland from 1983 to 1994, and they had three children. He was also married to Verona Feldbusch for thirty days and later had a son with model Stefanie Küster.
He was a judge on the competition show Das Supertalent along with model Sylvie Meis.