River City, Iowa: an American idyll in 1912. But there's “trouble in River City,” and it rhymes with hormones. Said secretions are from both the city's youth and itinerant salesman Professor Harold Hill (the sublimely suited Robert Preston), who's got his eye on Marian (Shirley Jones), the town's liberal librarian. A huckster selling musical instruments, Hill has got to drum up the disasters of youthful desire, then perfectly pitch the remedy, a marching band of countless trombones and brassy uniforms. The Music Man is brimming with memorable music, including the pre-rap rollick “Rock Island,” the alarming “Trouble,” that tongue-twisting tune “Gary, Indiana,” the lithe love song “Till There Was You,” and, of course, the blustering band number, “Seventy-Six Trombones.” Meredith Willson's bit of Americana laps up the folksy wisdom and popular tunes of the period, high-stepping from start to finish, but there is trouble simmering below the surface. Is it a loss of innocence? Or a shift in the marketplace? The Professor can only offer a temporary band-aid.