Justin Bieber has unveiled his collaborations with Mariah Carey and Chris Brown on his new Christmas album.
The singer, who is set to release 'Under The Mistletoe' on November 1, previously announced to fans that the pair have recorded a duet of Carey's Christmas number one 'All I Want For Christmas Is You'.
Justin Bieber posted a video of Mariah Carey discussing the collaboration, in which she says: "I am here today to tell you a little secret, Justin and I are doing a duet together. It is my song All I Want For Christmas Is You, which I wrote and produced and I'm very excited about it, really excited."
"I think a lot of you are very surprised by this, and you're gonna be even more surprised when you hear it. The song sounds great and I'm very excited for everybody to hear it this Christmas and to be totally festive with our festive collabo."
You can listen to both tracks below on Gigwise.
'Under The Mistletoe' always features a track with Boyz II Men.
Justin Bieber - live photos
You can keep up to date with all the latest news from Gigwise by following us on Twitter and liking us on Facebook.

Pete Doherty to sell Amy Winehouse blood painting
Stone Roses' Reni too unwell for comeback shows?
Azealia Banks reveals Lil Kim feud in Twitter rant
Damon Albarn reveals plans for possible new Blur material
Justin Bieber debuts new 'Boyfriend' video - watch
Justin Bieber raps over Kanye West, Jay-Z song
Camden Crawl day two: Glasvegas, Lower Than Atlantis and more
Camden Crawl Day One: In Pictures
Beastie Boys: remembering Adam 'MCA' Yauch 1964 - 2012