Taylor Delivers Emotional Performance of "New Year's Day" on "Tonight Show"

Taylor Swift helped bring some joy to a grieving Jimmy Fallon when she made an unscheduled appearance on his late night show. Swift, whose new album "reputation" dropped last Friday and is charging to the chart summit in the U.S., U.K. and in markets around the globe, stopped by the "Tonight Show" studios Monday evening to dish out some music therapy: a performance of "New Year's Day."