Ryan Tedder-' Demi är en av de bästa sångerskorna jag jobbat med!'
OneRepublic's Ryan Tedder berättade för E! Online om att sammarbeta med Demi Lovato på 'Who's That?', en sång han skrev och producerade för henne. 'Demi blew me out of the water vocally! I had no idea how good her voice is. She's one of the best singers I've ever worked with. Literally, that good.. I mean, she's a Kelly Clarkson-level vocalist. And Kelly has a set of pipes.'
The new song will be much more upbeat than the very personal 'Skyscraper': 'I think everybody wanted to hear her talk about that, and this is basically flipping it 180, saying, 'Oh, by the way, I'm still also just young and want to have fun.' There's even like a little rap feature on it.'