The goal of any good music film is to show what it was like to be at the venue when sparks flew from the stage, not necessarily the truth of the moments captured but the essence of the event that transpired. Most celluloid sequences just don’t get the job done—cutaway shots to insignificant visual images, show-offy camera angles that disrupt the flow of the music, short-changed artists with solos edited and brutal slices that choose not to expose the skinned-knee portions of any really good musical set.