Justin Bieber rocked around the Christmas tree with some special guests during a taping of “Christmas in Rockefeller Center” earlier this week. Busta Rhymes marched to the teen sensation’s beat on “Drummer Boy,” which they performed live for the first time. Biebs rapped his verse before throwing it to Bussa Bus, who put a new spin on the holiday classic. The camera phones came out when Usher hit the stage to duet with his protégé on “The Christmas Song (Chestnuts Roasting on an Open Fire).”

The annual Christmas special, which airs on November 30 at 8 p.m., will also feature the premiere of Justin’s video with Mariah Carey for “All I Want for Christmas Is You.”