Guest
Rolf Köhler had solo carrer in the 70s as Marc DeVille and worked for several different artists mainly in rock/powermetal productions such as Blonker,Ian Cussick, Uriah Heep, Blind Guardian, Helloween, Grave Digger, Gamma Ray, Iron Savior, Savage Circus, Tokyo, Mephistopheles, and Kin Ping Meh (featuring Geff Harrison) and many more. He has so many Italo Disco hits, and produced L'Affair,Solid Strangers ,BooWho etc.. They were the typical sounded falsetto choir of the Dieter Bohlen produced Modern Talking in 1984–1987 and 1998–2000 and Blue System in 1987–1997 with Rolf Köhler as the refrain singer,and background singer of all Dieter Bohlen productions like CC Catch,Chris Norman ,Bonnie Tyler etc. Rolf worked with Ralf Rene Maue who produced London Boys, Simone. They were on stage on the Eurovision in 1989 (Thomas Forstner Nur ein lied /Austria) and (Nino D'Angelo Flieger/Germany). In 2003 they created their own band Systems In Blue with their unique voices.
