American mezzo-soprano Jamie Barton was the 2013 winner of the BBC Cardiff Singer of the World competition, and her debut album plays to her great strengths, showcasing a rich and beautiful voice. Mahler’s Rückert Lieder are velvety, creamy, and full of drama, while Dvořák’s Cigánské melodie show off her wide-ranging color—just listen to those low notes—and sense of melodic line. Meanwhile, Sibelius’ lesser-known, tempestuous 6 Songs are nothing short of riveting.