One of the greatest singers in the history of country music, Patsy Cline also helped blaze a trail for female singers to assert themselves as an integral part of the Nashville-dominated country music industry. She was not alone in this regard; Kitty Wells had become a star several years before Cline's big hits in the early 1960s. Brenda Lee, who shared Cline's producer, did just as much to create a country-pop crossover during the same era; Skeeter Davis briefly enjoyed similar success; but Cline endured as an icon of the scene, perhaps partly due to an early death that cut he...