By rights, Cristina Branco shouldn't sing the urban Portuguese song form called fado. The genre, whose name translates as 'fate,' has its history in Lisbon, a enigmatic, poetic, working-class style about accepting the lot life and love has dealt. But Branco, who grew up in rural Almeirim, Portugal, has established herself as one of the country's foremost fadistas, with a growing international reputation. Born in 1972, she grew up listening to blues, jazz, and music from around the globe. Although she sang for her friends and family, she had no aspirations to make a living from...