The website confirms he's doing Want To Want Me though for goodness sake, MOVE ON BOY.

Is Sia doing Alive? Great to have her on the show finally!

The website confirms he's doing Want To Want Me though for goodness sake, MOVE ON BOY.

Wot about Cheyenne, Try Me and Get Ugly aka all the singles that came after

Is Sia doing Alive? Great to have her on the show finally!

Yep!

But no Bieber? Mind boggles. If I were the producers I would be throwing myself to get him on the show.