When Kris Kristofferson released his debut album in 1970, country music was practically defined by Merle Haggard’s “Okie From Muskogee,” a jingoistic anthem which condemned war protesters, drugs, and “long and shaggy” hair. The song was representative of a genre in an “astonishingly repressive” era, TIME would write a few years later: of cleanly picked guitars, lush orchestrations, and demure lyrics valuing authority and faith.