Nancy Sue Wilson (February 20, 1937 – December 13, 2018) was an American singer whose career spanned over five decades, from the mid–1950s until her retirement in the early–2010s. She was notable for her single "(You Don't Know) How Glad I Am" and her version of the standard "Guess Who I Saw Today". Wilson recorded more than 70 albums and won three Grammy Awards for her work. During her performing career Wilson was labeled a singer of blues, jazz, R&B, pop, and soul, a "consummate actress", and ...