"This year in Australia I faced for the first time the role of defending a major title, a Grand Slam title, and it wasn't really a fun time to be honest, " he said.

BBC: Djokovic the man to beat

We're holding out for the new Shadows, but yeah, it seems like a fun time to be a T-Mobile customer -- particularly if you're into the UMA stuff.

ENGADGET: Details emerge on T-Mobile's upcoming Samsung and Nokia releases

This isn't the first time the "Girls Just Want to Have Fun" singer has been asked to compose music for the stage.

WSJ: Cyndi Lauper just wants to have fun on Broadway