The Undisputed Truth was an American Motown recording act assembled by record producer Norman Whitfield to experiment with his psychedelic soul production techniques. Joe "Pep" Harris served as main lead singer, with Billie Rae Calvin and Brenda Joyce Evans on additional leads and background vocals.
The Undisputed Truth c. 1971. (clockwise from top) Joe Harris, Brenda Joyce Evans, Billie Rae Calvin.
Norman Jesse Whitfield was an American songwriter and producer, who worked with Berry Gordy's Motown labels during the 1960s. He has been credited as one of the creators of the Motown Sound and of the late-1960s subgenre of psychedelic soul.
Norman Whitfield's Temptations