WAUSAU — A true Wisconsin Christmas tradition, the John Altenburgh Christmas Extravaganza has long been the hottest ticket in town at the Grand Theater in Wausau. At 10 a.m. today, Dec. 12, Wisconsin Public Radio’s “Route 51” host Shereen Siewert welcomes Altenburgh, along with fellow band members Mitch Viegut and Paula Hall, for a sneak preview of this year’s show. […]