Martina McBride will join a host of pop stars to celebrate the lighting of the Christmas tree at New York City's Rockefeller Center on Nov. 29. She will sing "O Come, All Ye Faithful" and "Let It Snow," both included on her holiday CD, White Christmas. The festivities will air on NBC. Other performers include Christina Aguilera, Enya, Taylor Hicks, John Legend, Sarah McLachlan, Bette Midler, Lionel Richie and Sting. Today's Al Roker and Ann Curry will host the ceremony. McBride will also be included on a new holiday compilation this year, titled Sounds of the Season, available only at Target.