A documentary called The Man Who Would Be Polka King by Joshua Brown and John Mikulak followed a Ponzi scheme gone awry with an actual polka legend, Jan Lewan. 

Jack Black stars as Lewan in the biopic adaptation of the documentary entitled The Polka King and will be coming to Netflix later this year.

Based on the premise and Black starring, we’re automatically thinking this could be a very dark spiritual sequel to School of Rock.