Gary Allan navigated the distance separating hardwood honky tonks and polished country-rock, a path that sometimes resulted in chart-topping singles yet sometimes kept him on dirt roads just outside the mainstream. The tension between his traditional troubadour roots and instincts for anthemic hooks resulted in such number one hits as "Man to Man," "Tough Little Boys," and "Nothing on but the Radio" in the early 2000s. A decade later, "Every Storm (Runs Out of Rain)" brought him back to the top of Billboard's country charts, then he took the better part of the decade to comple...