Twitter reactions are overwhelmingly positive for the holiday tune.
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Watch as Justin Bieber premieres his new "Mistletoe" music video and exclusively talks about it to MTV News' James ...
"There's some songs on there that are so catchy, and everyone's gonna want to sing them every Christmas," Bieber says.
"The beat was so crazy. I'm actually playing drums on the actual song," Bieber says of his "Little Drummer Boy" track.
"I thought maybe it would calm down, but my fans are just, like, amazing. They never stop," Bieber says.
Besides "Under the Mistletoe," Justin Bieber is working on the follow-up to his chart-topping album, "My World 2.0."