by Margaret Reges
Hailed as pioneers of the German "tanz metal" (dance metal) scene and heavily influencing late-'90s acts like Rammstein, Oomph! were arguably one of the most controversial, influential, and popular German goth-industrial bands to emerge in the early '90s. In spite of their importance to the German industrial scene, however, Oomph! didn't break into the mainstream until the early…