Related Information for U.d.o. U.D.O. is a German heavy metal band founded by lead singer Udo Dirkschneider in 1987.After Udo Dirkschneider left Accept in 1987, a large fan community followed him to U.D.O.Starting with the first albums Animal House in 1987 and Mean Machine in 1988 U.D.O. proved to be pure heavy metal without any Trend-Sound influences. Both albums continued where Accept had left off in 1986 with Russian Roulette. Animal House was played in by Peter Szigeti (guitars), Frank Rittel from War.. read more