Watch Paul McCartney, The Roots, Jimmy Fallon and the cast of Sing do “Wonderful Christmastime” a cappella

Nobody slays a Brady Bunch checkerboard singalong like The Roots and Jimmy Fallon, and last night their guest was the great Sir Paul McCartney.

Macca joined The Tonight Show team, along with Matthew McConaughey, Reese Witherspoon, Scarlett Johansson, Seth MacFarlane, and Tori Kelly — the cast of the animated comedy Sing, who appeared in both their human and cartoon versions, to sing Macca’s “Wonderful Christmastime.”

Watch it below and get in the festive spirit.