The international entertainment phenomenon known as Mannheim Steamroller pulls into Hanover Theatre for the Performing Arts in Worcester for its always-special live holiday extravaganza. Grammy Award-winning producer and composer Chip Davis is the mastermind behind the acclaimed Renaissance rock band combo that released a runaway hit Yuletide album in 1984. It soon became the biggest-selling Christmas act in history, selling close to 40 million records. Davis himself directs and co-produces the concert, which features Mannheim Steamroller's signature acoustic-electronic seasonal hits performed live, accompanied by impressive multimedia effects. This show has some special guest performers: several members of the Massachusetts Symphony Orchestra.