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)".
W 1966 roku, Terrell nagrywa dwa single: kompozycje Steviego Wondera „All I Do (Is Think About You)” i The Isley Brothers – „This Old Heart of Mine (Is Weak for You)”.