But what a rebound—you know the head's coming off and Fassbender delivers moments of heartbreaking fragility that bring to mind the cult music documentary The Devil and Daniel Johnston.
Though fictionalized, the film feels of a piece with a couple of like-minded music documentaries: “Dig,” about the feud between the Dandy Warhols and the more out-there Brian Jonestown Massacre, and “The Devil and Daniel Johnston.”