Bettina Köster (born 15 June 1959 in Herford) is a German musician, saxophonist, composer, singer, songwriter and producer. Fall 1978, Köster, student of the Berlin art school Hochschule der Künste, began playing Saxophone for the Berlin underground band DIN A Testbild. In May 1979 Köster started with Karin Luner, Beate Bartel, Eva Gossling and Gudrun Gut an all-girls-band project Mania D. In Fall 1979 Mania D performed in New York at