February 26, 2012 12:00 AM

Years haven't exhausted 'Jersey Boys'

When a show tours for years with the same lead and many of the same actors in supporting parts, it usually goes in one of two directions: It sags and sprawls, as tired performers wring out another performance in yet another city, or it becomes a machine so well-oiled that it runs at top speed with near-relentless precision.

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