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. == History == In the 1960s, Billie Calvin and Brenda Evans had been part of a Los Angeles-based group called the Delicates. They were introduced to Motown by singer Bobby Taylor, so when the Delicates... [more on Wikipedia]