Rockefeller Christmas tree lighting
Michael Bublé performs during the 83rd annual Rockefeller Center Christmas Tree Lighting Ceremony on Dec. 2, 2015, in New York.
Jaimie Alexander
Jaimie Alexander poses for a photo at the 83rd annual Rockefeller Center Christmas Tree Lighting Ceremony on Dec. 2, 2015, in New York.
Andy Grammer
Andy Grammer poses for a photo during the 83rd annual Rockefeller Center Christmas Tree Lighting Ceremony on Dec. 2, 2015, in New York.
Pentatonix
Pentatonix members Avi Kaplan, Kirstie Maldonado, Scott Hoying, Mitch Grassi and Kevin Olusola poses for a photo during the 83rd annual Rockefeller Center Christmas Tree Lighting Ceremony on Dec. 2, 2015, in New York.
Rockefeller Center Christmas Tree
New York Police Department officers provide security at the lighting ceremony for the 83rd Rockefeller Center Christmas tree near Rockefeller Center in the Manhattan borough of New York, Dec. 2, 2015.
Rockefeller Center Christmas Tree
New York City Mayor Bill de Blasio, left, Jerry Speyer, second left, Rob Speyer, second right, and actress Jaimie Alexander, right, light the 2015 Rockefeller Center Christmas Tree, Dec. 2, 2015, in New York.
Rockefeller Center Christmas Tree
New York City Mayor Bill de Blasio, left, Jerry Speyer, second left, Rob Speyer, second right, and actress Jaimie Alexander, right, light during the 83rd annual Rockefeller Center Christmas Tree Lighting Ceremony on Dec. 2, 2015, in New York. The Norway Spruce tree stands at about 78 feet tall and is lit with multi-colored LED lights.
Pentatonix
Avi Kaplan, from left, Kirstin Maldonado, Scott Hoying, Mitch Grassi and Kevin Olusola of the music group Pentatonix perform during the 83rd annual Rockefeller Center Christmas Tree Lighting Ceremony on Dec. 2, 2015, in New York.
Sting
Sting performs at the 2015 Rockefeller Center Christmas Tree Lighting Ceremony, Dec. 2, 2015 in New York.
Sting
Sting performs during the 83rd Annual Rockefeller Center Christmas Tree Lighting Ceremony on Dec. 2, 2015, in New York.
Sting
Singer Sting performs at the lighting ceremony for the 83rd Rockefeller Center Christmas tree at Rockefeller Center in the Manhattan borough of New York, Dec. 2, 2015.
Sting
Singer Sting performs at the lighting ceremony for the 83rd Rockefeller Center Christmas tree at Rockefeller Center in the Manhattan borough of New York, Dec. 2, 2015.
Andy Grammer
Singer Andy Grammer performs at the lighting ceremony for the 83rd Rockefeller Center Christmas tree at Rockefeller Center in the Manhattan borough of New York, Dec. 2, 2015.
Andy Grammer
Andy Grammer performs during the 83rd annual Rockefeller Center Christmas Tree Lighting Ceremony on Dec. 2, 2015, in New York.
Andy Grammer
Andy Grammer performs during the 83rd annual Rockefeller Center Christmas Tree Lighting Ceremony on Dec. 2, 2015, in New York.
Michael Buble
Michael Bublé performs during the 83rd annual Rockefeller Center Christmas Tree Lighting Ceremony on Dec. 2, 2015, in New York.
Michael Buble
Michael Bublé performs during the 83rd annual Rockefeller Center Christmas Tree Lighting Ceremony on Wednesday, Dec. 2, 2015, in New York.
Rockefeller Center Christmas Tree
Holiday lights shine on the 83rd Rockefeller Center Christmas tree at Rockefeller Center in the Manhattan borough of New York, Dec. 2, 2015.
Rockefeller Center Christmas Tree
Holiday lights shine on the 83rd Rockefeller Center Christmas tree at Rockefeller Center in the Manhattan borough of New York, Dec. 2, 2015.
Rockefeller Center Christmas Tree
People at the star of the Rockefeller Center Christmas tree as it is lit during the 83rd annual Rockefeller Center Christmas Tree Lighting Ceremony on Dec. 2, 2015, in New York. The Norway Spruce tree stands at about 78 feet tall and is lit with multi-colored LED lights.
Rockefeller Center Christmas Tree
People watch as the Rockefeller Center Christmas tree is lit during the 83rd annual Rockefeller Center Christmas Tree Lighting Ceremony on Dec. 2, 2015, in New York. The Norway Spruce tree stands at about 78 feet tall and is lit with multi-colored LED lights.
Rockefeller Center Christmas Tree
The Rockefeller Center Christmas Tree is lit at the 83rd annual Rockefeller Center Christmas Tree Lighting Ceremony, Dec. 2, 2015 in New York.