One Direction Play 'Santa Claus Is Coming To Town' On Classroom Instruments With 'Tonight Show' Host Jimmy Fallon & The Roots [WATCH]

One Direction in Christmas sweaters and singing "Santa Claus Is Coming To Town" with Jimmy Fallon and The Roots on classroom instruments? It's a Christmas miracle (and a nice NBC tie-in). Harry Styles, Niall Horan, Liam Payne, Louis Tomlinson and Zayn Malik joined The Tonight Show host and house band to wail on some triangles and bring some holiday cheer into the world following their weekend appearance on Saturday Night Live to play "Night Changes" and "Ready To Run". Promoting their new album Four, the five are dominating the holidays in America, with their NYE spot opposite Harry Styles's ex-girlfriend Taylor Swift for the Times Square ball drop coming up next week. Read More »