Singer Danny Williams earned the nickname "Britain's Johnny Mathis" for his smooth and stylish way with a ballad. All of his hits occurred in the U.K., with the exception of one, "White on White." The single landed in the Top 10 in the U.S. in 1964, but ironically it bombed in the U.K. A native of South Africa, the vocalist stepped to the forefront of his church choir at the age of six, when he was tapped as a soloist. By the age of 14, he competed for a spot in a production called Golden City Dixies, which was based in Johannesburg but set to tour England and other countries....