Celebrating its 89th year, the lighting of the National Christmas Tree signals the start of the holiday season across the country. Taped at President's Park in Washington, D.C. and hosted by Carson Daly, the one-hour concert will feature performances by pop sensation One Republic ("Good Life," "Apologize"), country artist Rodney Atkins ("Take A Back Road"), R&B newcomer Marsha Ambrosius and a special appearance by Kermit The Frog. The evening's festivities will be capped off with the ceremonial lighting of the National Christmas Tree -- by a very special guest!