Carnival is not just about parades and revellry -- it's also about humour, about satire. And one man who is very much in demand in the big carnival venues is Klaus Rupprecht -- also know as Klaus and Willi. He's two voices in one because he's a ventriloquist. And by the end of this year's carnival he'll have made no fewer than 200 appearances on stage. We've been following Klaus AND Willi to take a closer look.