LIGHTING UP THE WORLD’S MOST FAMOUS CHRISTMAS TREE — NBC heralds the arrival of the holidays with a dazzling display of musical talent and the lighting of the world’s most famous Christmas tree during the 15th annual “Christmas in Rockefeller Center” telecast. The star-studded holiday special will feature performances from Trace Adkins, Tony Bennett, Mariah Carey, CeeLo Green (NBC’s “The Voice”), Victoria Justice, Chris Mann, Scotty McCreery, Rod Stewart and Il Volo, and special appearances by Billy Crystal, Bette Milder and the Radio City Rockettes. Co-hosted by Al Roker and Savannah Guthrie, both of NBC’s “TODAY,” the star-studded 80th annual tree lighting extravaganza will feature an array of musical guests performing current hits and holiday classics from Rockefeller Center in New York City. Prior to the network special, WNBC, NBC’s New York flagship station, and other NBC stations will broadcast an additional live hour of the special (7-8 PM ET.) “Christmas in Rockefeller Center” is produced by Brad Lachman Productions with Lachman serving as executive producer. Bill Bracken produces.