Question: What American composer was recognized by a privately funded foundation that was concevied in 1978?
Sentence (from "Mississippi Institute of Arts and Letters"): Past winners have included Walker Percy, Ellen Douglas, Ellen Gilchrist, Richard Ford, Larry Brown, Rick Bass, Lewis Nordan, Beverly Lowry, Donna Tartt, Clifton Taulbert, Barry Hannah, Willie Morris, Leontyne Price, Cynthia Shearer, Stephen Ambrose, Steve Yarbrough, Tom Franklin, Brad Watson, Shelby Foote, Natasha Trethewey, Birney Imes, Maude Schyler Clay, William Grant Still, Morgan Freeman, Christopher Maurer, Wyatt Waters, Logan Skelton, and many others.
Relevant evidence: Yes