What do we really talk about when we talk about stardom? That’s the question that drives The Nowhere Inn, a mockumentary written by and starring the Grammy-winning musician St. Vincent (Annie Clark) and Carrie Brownstein, of Sleater-Kinney and Portlandia fame. Part concert film and part comedy, the film follows a fictionalized version of Clark as she molds and remolds her public image while on tour. Meanwhile, Brownstein, also playing a fictionalized version of herself, tries to film a behind-the-scenes documentary about Vincent’s life, forcing the singer to perform both on and offstage. A hallucinatory trip down the rabbit hole of fame, Bill Benz’s feature directorial debut is less about music-making than about the art of being well known. Stop Making Sense meets Being John Malkovich, the film calls into question that ever porous line between artifice and authenticity, truth and fiction. —Sarah Nechamkin