Riders in the Sky

Johnny Cash, Lubbock Lou and His Jughuggers, Gonzo and the Chickens sang Riders in the Sky on The Muppet Show episode 521. It was included on Playhouse Video: Country Music.

The song has been recorded by numerous non-Muppet artists over the years; Johnny Cash recorded it in 1979 on his album "Johnny Cash - Silver".  Wikipedia has an article related to: Wikipedia:Riders in the Sky: A Cowboy Legend