The Lingua Mortis Orchestra (LMO) is the name associated with the orchestras who played with Rage since 1996 on the albums or on stage. Rage's tenth studio album, "Lingua Mortis" was the first classical album by a metal act, and a collaboration with the Prague Symphony Orchestra. Later, Rage worked with the orchestras in some of the band's most known albums, such as in "XIII" and "Ghosts". In 2006, an orchestra from Minsk, Belarus, that was also named Lingua Mortis Orchestra, recorded with Rage the "Speak of the Dead" album, and on the next year, Rage did 2007 several shows with the Lingua Mortis Orchestra, and their performance at Wacken Open Air was recorded as a bonus DVD for their next album, "Carved in Stone".