Cat Steven’s Tea For the Tillerman and Teaser and the Firecat released in 1970 and 1971 respectively were two of the best back to back albums produced by any singer/songwriter. The video above is a live performance of Wild World from the BBC. Give Cat a listen if you haven’t already. By the way he currently performs as Yusuf Islam after his conversion to Islam in 1977.
As a personal aside, a southern group called The Gentrys had a minor hit with Wild World in 1971 and they performed at my High School Prom that year.