Premise: A supergroup is a music group whose members are already successful as solo artists or as part of other groups or well known in other musical professions . Willie Nelson . Due to this success , Nelson signed in 1964 with RCA Victor and joined the Grand Ole Opry the following year . During the mid-1980s , while creating hit albums like Honeysuckle Rose and recording hit songs like `` On the Road Again '' , `` To All the Girls I 've Loved Before '' , and `` Pancho and Lefty '' , he joined the country supergroup The Highwaymen , along with fellow singers Johnny Cash , Waylon Jennings , and Kris Kristofferson .
Hypothesis: Willie Nelson was in a band.
Label: ENTAILMENT