Ethan Coen, half of the celebrated Coen Brothers filmmaking duo, goes solo with this all-archival rock doc, whittled down to 73 minutes and stitched together from a mountain of old footage from the musician and producer T-Bone Burnett. The mix of live performance clips, sass-mouthed television interviews and the subject’s unbound showmanship adds up to an “undiluted shot of rock ‘n’ roll moonshine joy.” (Variety).