Time : Dec. 29th at 8pm, Dec. 30th at 2pm Location : Tulsa Performing Arts Center Christmas isnt over until you say it is Make those warm holiday feelings last a little longer with this special end-of-year live concert by the multi-platinum-selling recording group Mannheim Steamroller. Known for its modern arrangements of traditional holiday music, Mannheim Steamroller is the creation of Chip Davis, a former ad agency jingle writer who first became famous by writing the music for Convoy, a hit song that popularized the CB radio fad of the late 1970s. Davis subsequently founded Mannheim Steamroller and its record label, American Gramophone. The groups popularity exploded in 1984 with the release of its first Christmas album, which was enthusiastically promoted by Rush Limbaugh on his radio show. The group has toured every year at Christmastime for more than 25 years. This event goes on sale December 3 at 10am.