After making fun and offending some candidates vulgarly as juror on Deutschland sucht den Superstar (2002), a German federal agency, comparable to the FCC in the US, announced an investigation (January 2007).
Formed the pop duo "Modern Talking" with Thomas Anders in 1984. They split up in 1987, but tried a successful comeback in 1998 and performed until 2003. Although being criticized for playing the same song in countless different versions, they had several number 1 hits through Europe such as "You're my heart, you're my soul" (1985), "Cheri Cheri Lady" (1985) and "Brother Louie" (1986).
Also composed some music for the legendary German TV series Derrick (1974).
Children: Marc (9 July 1985), Marvin Benjamin (21 December 1988), Marielin (23 February 1990), Maurice Cassian (7 July 2005).
Studied economics at the University of Göttingen.