Gangsta rap and a studio band on the opera stage? Are you kidding me? No, it's great! XATAR, German rapper, entrepreneur, publisher and producer, whose life story has just been filmed by director Fatih Akin under the title Rheingold, features the instrumental band Heavytones, well-known from many TV formats. Both acts share a great passion for jazz and, by their own admission, there was "quite a spark" at their first meeting.