It’s not officially the holiday season until Jimmy Fallon, Mariah Carey, and The Roots perform “All I Want for Christmas Is You” with a kazoo, a xylophone and a group of school children singing backup vocals. There is something so brilliantly festive and infectious about this take on the classic tune that you can’t help but smile while watching it. And it doesn’t hurt that it is the Best. Christmas. Song. Ever. Take a look below.