Now in its 93rd year, the lighting of the National Christmas Tree signals the start of the holiday season across the country. This yearly festival of lights will feature music legends Crosby, Stills & Nash, multi-platinum selling artists Fall Out Boy; retro-pop-soul singer Andra Day; singer-songwriter and multi-instrumentalist Tori Kelly; and musician and producer Trombone Shorty...with a special appearance by Miss Piggy! Be sure to tune in Sunday, December 20, at 4pm.