Justin Bieber Collabos Mariah Carey And Busta Rhymes

Hey Beliebers, you can celebrate the holidays early this year! Just days before he officially releases Under the Mistletoe, Justin Bieber is gifting fans with the early release of two high-profile duets off the November 1 album.

First off, his highly anticipated Mariah Carey collabo, an updated mix of her Christmas classic "All I Want for Christmas," made its way online. The song, posted on Rap-Up.com, opens with Bieber and Carey exchanging vocal runs. Mariah's verse, which sounds very much like the original, goes first. Then Bieber, singing in a deeper register than usual, joins in for the second verse.

On Bieber's collaboration with Busta Rhymes on the classic "Little Drummer Boy," which was posted on Hitfix.com, the boys threw some club beats and synths over the old-school Christmas track. The song gets a bit of an edge when Bieber, a skilled drummer himself, appears as his rapper alter ego Shawty Mane.