U.D.O. started back in 1987. Since then a couple of 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 dissapointed, for Udo amazed them with new U.D.O..
Starting with the first albums “Animal House” in 1988 and “Mean Machine” in 1989 U.D.O. proved to be pure heavy metal without any “Trend-Sound” influences. Both Albums continued where ACCEPT had left of in 1986 with “Russian Roulette”. “Animal House” was played in by Peter Szigeti (guitar), Frank Rittel from WARLOCK (bass), Mathias Dieth from SINNER (guitar),Thomas Franke (drums) and of course Udo Dirkschneider (vocals). When “Mean Machine” was released in ’89 U.D.O. had a totally different look. From the line-up which had played on “Animal House”, remained besides Udo only Mathias Dieth (guitar). New were Andy Susemihl (guitar), Thomas Smuszynski (bass) and Stefan Schwarzmann (drums).
Even though the unwritten U.D.O. law “No-Keyboards” was broken, U.D.O. achieved a amazing success, with the album “Faceless World” “, produced by ex-ACCEPT drummer Stefan Kaufmann. At first disputed, it turned out to be, with Udo Dirkschneider (vocals), Mathias Dieth (guitar), Wolla Boehm (guitar), Thomas Smuszynski (bass) and Stefan Schwarzmann (drums), U.D.O.’s most sold album so far.