Trace Adkins, Mariah Carey and Cee Lo Green are set to perform this month at the Christmas tree lighting in New York’s Rockefeller Center, NBC said. The even takes place on November 28th. Victoria Justice, Chris Mann, Rod Stewart and I1 Volo are also booked to sing. Billy Crystal and Bette Milder will make special appearances, as well. “The 80thannual holiday extravaganza will feature a Norway Spruce from Colorado that is approximately 80 feet tall, 50 feet in diameter and weighs approximately 10 tons.