First released by The Flying Burrito Brothers (1970).
Hit version by The Rolling Stones (US #28 1971).
From the wiki: “‘Wild Horses’ was written by Mick Jagger and Keith Richards for their 1971 album Sticky Fingers. Originally recorded over a three-day period at Muscle Shoals Sound Studio in Alabama during 2–4 December 1969, the song was not released until over a year later due to legal wranglings with the band’s former label, Atco, and manager, Allen Klein.
“In the meantime, and prior to its release on Sticky Fingers, Gram Parsons convinced Jagger and Richards to allow him to record ‘Wild Horses’ with his band The Flying Burrito Brothers after Richards’ request to Parsons that Burrito Brother Sneaky Pete Kleinow add some pedal steel licks to the Stones’ recording. The Burrito Brothers’ version was actually the first to be released, appearing on their second album, Burrito Deluxe, in April 1970.”
The Rolling Stones, “Wild Horses” (1970):