Justin Bieber & Mariah Carey's 'Under The Mistletoe' Duet: 'All I Want For Christmas' (LISTEN)

It's Bieber Friday everyone! Like Christmas morning, little Bielebers everywhere woke up to find one spectacular present waiting for them on their computers -- Justin Bieber and Mariah Carey's holiday duet, "All I Want For Christmas Is You."

Looks like some little elf was hard at work last night because the much-anticipated single was leaked early this morning. We're not
going to lie: It's no "Mistletoe," but for the Bielebers who are too young to remember Mariah Carey's original version of the holiday pop classic, it will probably be their new favorite song. Let's face it, forget Bing Crosby and Nat King Cole, for these tweens, it's all about Justin Bieber.

In an interview with Billboard magazine, Bieber admitted that taking on the Mariah Carey classic was a challenge because he had to stay in the same key as her. Perhaps he should have reworked the song like Michael Buble did on his "Christmas" album because we're just not feeling this one, Biebs.

What do you think?