General critical consensus holds Mahalia Jackson as the greatest gospel singer ever to live; a major crossover success whose popularity extended across racial divides, she was gospel's first superstar, and even decades after her death remains, for many listeners, a defining symbol of the music's transcendent power. With her singularly expressive contralto, Jackson continues to inspire the generations of vocalists who follow in her wake; among the first spiritual performers to introduce elements of blues into her music, she infused gospel with a sensuality and freedom it had ne...