Watch HDToday. The unmistakable voice of Whitney Houston is powerful and timeless. She reached the pinnacle of pop success becoming one of the most accomplished recording artists of all time. But her heart was always in Gospel music, and it profoundly influenced her life and career. From her first public performance to her best-selling Gospel album of all time, The Preacher's Wife, experience how profoundly Gospel music influenced her personal life and helped shape her career.