Caroline Catharina Müller (born July 31, 1964), known as C.C.Catch, is a German pop singer and composer. Caroline was born in Oss (the Netherlands). She moved with her family to Germany in the late 1970s. In 1980 she was a member of the girl quartet "Optimal". After that (starting in 1985) she cooperated with Dieter Bohlen under the name C.C.Catch. Dieter Bohlen was the driving force behind her records, writing and producing all the songs. This was the main reason for the ending of their collaboration in 1989.