The arrival of the holidays wouldn't be complete without a dazzling display of musical talent and the lighting of the world's most famous Christmas tree, live from Rockefeller Center in New York City and hosted by "Today" anchors Matt Lauer, Savannah Guthrie, Al Roker and Hoda Kotb. The star-studded evening will feature musical performances from Tony Bennett, Neil Diamond, Josh Groban, Tori Kelly, Sarah McLachlan, Dolly Parton, Jordan Smith, Garth Brooks & Trisha Yearwood, the Radio City Rockettes and more, performing current hits and holiday classics. Prior to the primetime telecast, an additional live hour of the special will be broadcast on select NBC stations (7-8 p.m. ET). Check local listings.