One of the top gospel quartets of the postwar era, the Harmonizing Four were also a relative anomaly of the period; as their contemporaries raced to modernize their sound, rejecting the traditional jubilee style in favor of the intensity of the burgeoning "hard gospel" movement, the Four remained true to their roots, focusing instead on the spirituals and hymns of a time gone by. For all of their renown, little is known about the group's formative years -- their leader and manager, Joseph "Gospel Joe" Williams, forbade any of the members to agree to interviews unless they were...