‘Sometimes audiences applauded Frank; sometimes they threw stuff at him’

Frank is a music biopic, but only of sorts, as it is not at all like your average music biopic. It’s not that processional march we have come to expect; that chronological story of tough beginnings, the moment of discovery, tour montages, calendar dates flying, and finally making it big. In fact, this is about a musician for whom making it big would be the death of him, and very nearly is. Also, it stars Michael Fassbender wearing bad knitwear and a giant paper-mâché head. So it is not Walk the Line or Dreamgirls or The Karen Carpenter Story, is what I’m saying, and it is profoundly more interesting and affecting for it.

This is based on a memoir by the journalist Jon Ronson (The Men Who Stare At Goats) who, as a writer, has made the marginalised his speciality and who, for a spell in the Eighties, played keyboard for Frank Sidebottom and his band.