U.D.O. — the German metal band fronted by former ACCEPT singer Udo Dirkschneider — will play a very special show on February 20 in Tuttlingen, Germany where they will be joined on stage by a marine corps orchestra.Video footage of the rehearsal sessions for this truly once-in-a-lifetime event can be seen below (courtesy of the German television channel NDR). U.D.O.'s new album, "Steelhammer", was released on May 24, 2013 via AFM Records. The CD was produced by Dirkschneider and Fitty Wienhold. U.D.O. in 2012 announced the addition of guitarist Andrey Smirnov to the group's ranks. He replaced Stefan Kaufmann, who left the group for health reasons. Stefan will continue to work with U.D.O. behind the scenes and produce other bands at his Roxx studio. Kaufmann was the drummer for ACCEPT on nine albums but was forced to give up drumming towards the end of the band's initial run due to health problems. Stefan joined U.D.O. as a guitar player in 1996, following ACCEPT's second breakup, and has recorded nine albums with them. "Live In Sofia", the new DVD+CD and Blu-ray+CD from U.D.O., entered the Music DVD chart in Finland at position No. 1 and in Germany at No. 4. "Live In Sofia" contains footage of U.D.O.'s November 16, 2011 concert at Hristo Botev Hall in Sofia, Bulgaria.