Überdruck is a Hard Trance DJ collaboration from Germany between David Rzenno and Dj The Crow Dirk Nothroff. Überdruck are seen as Germany's number 1 Hard Trance act. The story of Überdruck began in one of the first techno clubs in Germany, the Reactor Club, in NRW, and was founded in 1993 by Dirk Nothroff. With more than 10 years DJ experience he initiated the club, working as resident DJ under the name “The Crow”. After 4 years Dirk handed