D.R. Ransdell would have never guessed that nostalgia for living in Durango, Mexico, would lead her to join a mariachi band in Tucson, Arizona. Nor would she have guessed that learning by ear could be such a devilish challenge or that the standard mariachi repertoire started with a list of a hundred songs.Despite scheming rivals and flirtatious compadres, Ransdell persevered. She participated in stage performances and rowdy house parties while learning...