NBC once again 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 16th annual "Christmas in Rockefeller Center" telecast.

With the flick of a switch, 45,000 multi-colored and energy efficient LED lights on the 76-foot, 12-ton spruce will be lit Wednesday at 8:55 p.m. in Rockefeller Plaza.

The star-studded 81st annual tree lighting extravaganza will feature musical guests including Mary J. Blige, Toni Braxton, Mariah Carey, Kelly Clarkson, Kenny "Babyface" Edmonds, Goo Goo Dolls, Ariana Grande and Jewel performing current hits and holiday classics from Rockefeller Center in New York City.

Watch it tonight at 8pm on NBC TV.

See a complete listing of all of this season's Christmas TV.