"The Twentieth Century is Almost Over" was re-recorded five years later by Cash and Waylon Jennings,  Kris Kristofferson, and  Willie Nelson, one of the most recognized artists in what type of music?
Rockabilly Blues Rockabilly Blues is the 64th album by American country singer Johnny Cash, released on Columbia Records in 1980. Highlights include "Cold Lonesome Morning," which had some minor chart success (No. 53 in the country charts), "Without Love," by his son-in-law, Nick Lowe, and a cover of the witty "The Twentieth Century is Almost Over." The first two of the aforementioned songs were the only singles from the album, though "Without Love" hardly enjoyed any chart success, peaking at No. 78. "The Twentieth Century is Almost Over" was re-recorded five years later by Cash and Waylon Jennings, Willie Nelson and Kris Kristofferson, collectively known as The Highwaymen, on their first album entitled "Highwayman", though it was, in essence, a duet with Nelson.
Folk rock Folk rock is a music genre combining elements of folk music and rock music. In its earliest and narrowest sense, the term referred to a genre that arose in the United States and the United Kingdom around the mid-1960s. The genre emerged from bands such as the Beatles, the Searchers, and the Animals in the UK, and Bob Dylan and the Byrds in the US, who played traditional folk music and songs with rock instrumentation. The term "folk rock" is first noted as being used by the U.S. music press in June 1965 to describe the Byrds' music; the band's debut album was released the same month.