Jack Black is not one to shy away from laying down some sick tunes in his movies, but it's usually not the kind of music that makes you think of lederhosen, finely cooked sausages and windmills. In THE POLKA KING Black will star as infamous polka musician, Jan Lewan, who on top of shredding on the accordion was caught having people invest people’s money in a Ponzi scheme, with his wife Marla (Jenny Slate) by his side trying to reclaim her beauty queen glory.