Justin Bieber on 'So Random' -- FIRST LOOK!

Justin Bieber puts on an intimate performance for the crowd on the holiday episode of So Random.

In the upcoming episode, the 17-year-old musician sings his hit holiday track, “Mistletoe,” from his new album, Under the Mistletoe.

Also in the episode: MC Grammar raps about Christmas and introduces Dr. Dreidel; Coolest Kid enjoys holiday treats and advises kids to stay in school; Becky Beaver learns she has a wonderful life; Platowski Bros. sing about one another to the tune of holiday jingles; and Harry Potter shops at Voldemarts for the holidays.

The So Random! holiday show premieres Sunday, December 4th @ 7:30PM ET/PT on Disney Channel.

Justin is also pictured leaving the TV Total studios in Cologne, Germany on Tuesday afternoon (November 15). 10+ pics inside…