Elementary school teacher who is a playwright

A con man comes to an Iowa town with a scam using a boy's marching band program, but things don't go according to plan.

Con man "Professor" Harold Hill arrives in River City, Iowa, promising that he can teach the small town's children how to play in a magnificent marching band. It's all part of a big swindle, but falling in love with the town librarian wasn't part of the deal.