Original sentence: Buddy Guy was a leading star at the 1969 Supershow at Staines, England that also included Clapton, Led Zeppelin, Jack Bruce, Stephen Stills, Buddy Miles, Glen Campbell, Roland Kirk, and Jon Hiseman
Edited sentence: Buddy Guy appeared onstage at the April 1969 Supershow at Staines, England that also included Clapton, Led Zeppelin, Jack Bruce, Stephen Stills, Buddy Miles, Glen Campbell, Roland Kirk, and Jon HisemanThe Misunderstood Roland Kirk