As psychedelia redefined the sonic possibilities of rock ‘n’ roll, The Band twisted the music’s roots—folk, jazz, gospel, blues, country—into a sound every bit as innovative. Greatest Hits is a chronological sampler of the many classic cuts they released between 1968 and 1977, highlighting their mastery of in-the-pocket funk (“Up On Cripple Creek”), Cajun soul (“Life Is a Carnival”), and moonlit hymns (“The Weight”). And on “Chest Fever,” they proved you just need a churchly organ drone to trigger an out-of-body experience.