Rod Stewart and Ron Isley - This Old Heart of mine 1989 “This Old Heart of Mine (Is Weak for You)” is a Holland–Dozier–Holland song that was a hit for American musical group the Isley Brothers in January 1966 during their brief tenure on Motown’s Tamla label. Featuring Ronald Isley on lead vocal, “This Old Heart of Mine” peaked at number twelve on the Billboard Hot 100, and at number six on the Billboard R&B Singles chart. In 1975, English singer Rod Stewart released a remake of this song that c