Luke Fowler’s work has long asked how we come to know someone in their absence. He has explored this question by creating posthumous portraits of individuals through precise compositions of the things they have left behind: recorded images and sounds, papers and notes, artwork, the spaces through which they moved, and the testimonies of friends who remain among the living. Patrick evokes the life of its eponymous music producer [Patrick Cowley] by all these means, taking in the postindustrial charms of San Francisco’s now-gentrified South of Market district, once famous for its dance clubs and leather bars, as if searching for Cowley’s still-lingering energy.