George W. Bush and Bill Clinton , and South Africa’s president, Nelson Mandela . http://www.youtube.com/v/DluynRKEBjc?fs=1&hl=en_US In 1995, Walker joined Thelma Houston , CeCe Peniston , Phoebe Snow and Lois Walden to record a gospel album in common, Good News in Hard Times , as the quintet called The Sisters of Glory .