Kris Kristofferson, whose songs had been featured on Joan Baez' 1973 compilation "Hits: Greatest and Others," has also been in what music supergroup was with artists Waylon Jennings, Willie Nelson, and Johnny Cash? 
Hits: Greatest and Others: Hits: Greatest and Others was a 1973 compilation Vanguard put together at the end of Joan Baez' association with their label. Hits: Greatest and Others:  In addition to her hit cover of The Band's "The Night They Drove Old Dixie Down", songs by the Beatles and Kris Kristofferson were also included. Kris Kristofferson:  In 1985, Kristofferson joined fellow country artists Waylon Jennings, Willie Nelson, and Johnny Cash in forming the country music supergroup The Highwaymen.
The Highwaymen