It's going to be on the soundtrack of the new Disney movie Oz the Great and Powerful . Dramatic key-change alert!

It's been a while since she did a heart-tugging ballad with a big dramatic key change.

This song was written by Mariah with Stargate, the Norwegian production team behind some of Rihanna's biggest hits, including "Don't Stop the Music," "Diamonds," "Only Girl (in the World)," and "Rude Boy."