The Shirelles. After another single, Terrell left the label and, having been introduced to James Brown, signed a contract with him and began singing backup for his Revue concert tours. In 1961, Terrell created the group The Sherrys. However, in late 1962, she was kicked out of the group, due to multiple disputes. Eventually, they both went their separate ways, with The Sherrys moving on without her. In 1963, she recorded the song "I Cried". Released on Brown's Try Me Records, it became her first charting single, reaching No. 99 on the Billboard Hot 100. After this tenure ended, Terrell signed with Checker Records and released the Bert Berns-produced "If I Would Marry You", a duet with Jimmy Radcliffe, which Terrell co-composed. Following this relative failure, Terrell announced a semi-retirement from the music business and enrolled in the University of Pennsylvania where she majored in pre-med, staying at the school for two years. In the middle of this, Terrell was asked by Jerry Butler to sing with him in a series of shows in nightclubs. After an arrangement was made by Butler to assure Terrell that she could continue her schooling, she began touring with Butler. In April 1965, during a performance at the Twenty Grand Club in Detroit, she was spotted by Motown CEO Berry Gordy, who promised to sign her to Motown. Terrell agreed and signed with the label on April 29, her 20th birthday. "I Can't Believe You Love Me" became Terrell's first R&B top 40 single, followed almost immediately by "Come On and See Me". In 1966, Terrell recorded two future classics, Stevie Wonder's "All I Do (Is Think About You)" and The Isley Brothers' "This Old Heart of Mine (Is Weak for You)". After the release of her first single on Motown, Terrell joined the Motortown Revue opening for The Temptations. Success with Marvin Gaye In early 1967, Motown hired Terrell to sing duets with Marvin Gaye, who had achieved duet success with Mary Wells and Kim Weston as well as having recorded duets with Oma Heard. During recording sessions, Gaye would recall later that he did not know how gifted Terrell was until they began singing together. At first the duets were recorded separately. For sessions of their first recording, the Ashford & Simpson composition "Ain't No Mountain High Enough", both Gaye and Terrell recorded separate versions. Motown remixed the vocals and edited out