Watch Jimmy Fallon Lead a Star-Studded Sing-Along to Paul McCartney’s ‘Wonderful Christmastime’

Ever sinceJimmy FallonandMariah Careyplayed her classic Christmas hit "All I Want For Christmas Is You" on classroom instruments, it's been hard for the late-night host to even top himself with any other sing-alongs — that is, until 2016.

In one of his Brady Bunch-style performances, Fallon recruited hisRootsband along with the likes of Reese Witherspoon, Matthew McConaughey, Tori Kelly, Seth McFarlane and Scarlett Johansson to sing a harmonious version ofPaul McCartney's "Wonderful Christmastime." And to really get into the holiday spirit, of course McCartney tagged along for the caroling bit.

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The sing-alongs don't stop there for McConaughey, Kelly, Johansson, Witherspoon and McFarlane, either. They all star in the animated film Sing , which hits theaters Wednesday (Dec. 21). Their animal characters are also featured in the McCartney sing-along, making for one festive video.

Watch Fallon and the gang sing "Wonderful Christmastime" below.

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