↓ Gil Scott-Heron / Pieces of a Man (1971)
https://matatabido.hatenablog.com/entry/2020/03/25/104054
↓ Gil Scott-Heron / Free Will (1972)
https://matatabido.hatenablog.com/entry/2020/03/19/001629
↓ Gil Scott-Heron and Brian Jackson / It's Your World (1976)