His fans don't know what he looks like because Cro always wears a panda mask on stage. But despite the make, we get a lot closer to the enigmatic rapper in a new film that's opening in German cinemas.

You might not even know it, but Germany is one of the biggest and most influential music markets around. One of its biggest players is 24-year-old Carlo Waibel, better known as Cro, from Stuttgart, ...