Singers Jason Mraz and Colbie Caillat rehearse Dec. 6, 2012, for the lighting of the National Christmas tree on the Ellipse in downtown D.C. later that evening. (Barbara L. Salisbury/The Washington Times)

Photo by: BARBARA L. SALISBURY

Singers Jason Mraz and Colbie Caillat rehearse Dec. 6, 2012, for the lighting of the National Christmas tree on the Ellipse in downtown D.C. later that evening. (Barbara L. Salisbury/The Washington Times)