Al Roker and Jane Krakowski host the 76th annual lighting of the Christmas tree in Manhattan. Illuminating the proceedings are performances by music artists rendering current hits and time-honored holiday songs. Among them: Beyoncé, Miley Cyrus, Tony Bennett, Jonas Brothers, Harry Connick Jr., David Cook, Faith Hill, Rascal Flatts and Solange Knowles. Rosie O'Donnell and Stephen Colbert also make appearances.