U.D.O. started back in 1987. Since then over 25 years have past, and U.D.O. has become a well known name in the heavy metal world. Within a short period of time U.D.O. became to be a global presence, with pure sound and the unmistakable voice of Udo Dirkschneider. Closely tied to the name U.D.O. is ACCEPT, founded by Udo Dirkschneider and Michael Wagner (later to become a top producer) in Solingen, which was the predecessor of U.D.O. Already back then, Udo gave the band the label "unmistakable". The path ACCEPT took was marked with classics like "Breaker", "Restless and Wild" and "Balls to the Wall". After the breaking up of ACCEPT in 1987, a large fan community followed Udo Dirkschneider to U.D.O.. The loyal fans were not disappointed, for Udo amazed them with new U.D.O..

former members for the Alan Baird Project