"Wonderful Christmastime" by Jimmy Fallon, The Roots, Paul McCartney and the cast of 'Sing'
4,582 Views | 1:24 | Uploaded on Dec 21, 2016
Jimmy and The Roots join Paul McCartney, Matthew McConaughey, Reese Witherspoon, Scarlett Johansson, Seth MacFarlane and Tori Kelly for an a cappella rendition of "Wonderful Christmastime."