At a Mexican military base, Captain Eduardo Barrón picks up not a rifle but a microphone. Swaying boot-to-boot, he belts out a song as the sounds of trumpets and accordions roar from a band of a dozen camouflage-clad soldiers.
The rhythmic style — known as a corrido — is recognizable to just about every soul in the Latin American nation of 130 million. But Barrón’s lyrics diverge sharply from those blaring on speakers across Mexico.
