Every eight minutes in this country, a new production of Music Man is staged somewhere. That means that every eight minutes, someone has to assemble or find a good, old-fashioned barbershop quartet…because you can't put on Music Man without four guys who can make wonderful vocal harmony, a cappella. These four guys, who performed at a production in St. Louis, are as good as any I've ever heard. Some of them even have that oft-seen look that one sees on the faces of men singing barbershop. It's that look that says, "I can't believe how cool we sound."