F.M. Einheit (also known as FM Einheit, FM, Mufti, real name: Frank Martin Strauss, born December 18, 1958, in Dortmund) is an industrial and electronic musician from Germany. While primarily known for his percussion work with the influential industrial group Einstürzende Neubauten, he has also collaborated with KMFDM, Goethes Erben and recorded several albums in collaboration with other musicians (such as Andreas Ammer, Ulrike Haage) and solo. F.M. Einheit was also involved in the projects Stein and Gry.