Peter Whitehead’s disjointed Swinging London documentary, subtitled “A Pop Concerto,” comprises a number of different “movements,” each depicting a different theme underscored by music: A early version of Pink Floyd’s “Interstellar Overdrive” plays behind some arty nightclub scenes, while Chris Farlowe’s rendition of the Rolling Stones’ “Out of Time” accompanies a young woman’s description of London nightlife and the vacuousness of her own existence. In another segment, the Marquess of... see more