Former and current executives of Campbell Mithun performed in the grand finale, singing “Celebration” with musical artist Kool & The Gang, at the recent Juvenile Diabetes Research Foundation Imagination Ball held in Minneapolis. Stepping up to the microphones were (l. to r.) David Tree, the Minneapolis agency’s former chief creative officer; Les Mouser, president and chief executive officer; Robert Bell, a.k.a. “Kool”; and Bill Dunlap, chairman emeritus.