Professor Harold Hill likes a challenge and when the other salesmen onthe train west tell him that Iowa is the biggest test of all of salesability, he gets off at River City. We know it's the 20th centurythere, only because of a reference in one of the songs to Gary,Indiana. Marian the librarian doesn't buy the professor's line but heconvinces many of his other potential customers that the new pool tablethat has just been placed in the billiard parlor could mean "trouble inRiver City." How to keep the youngsters "moral after school?" Form aboys marching band.