Glenn Gould is arguably the most documented classical musician of the last century. In addition to numerous films about him (including François Girard's seminal Thirty Two Short Films About Glenn Gould and two fine portraits by Roman Kroitor), Gould appeared in countless radio and television programmes, culminating with John McGreevy's legendary Glenn Gould's Toronto. Still, few of these pieces have managed to truly capture all of the myriad contradictions that made up Gould. Most have readily accepted his carefully groomed public persona. One of the more notable aspects of Michèle Hozer and Peter Raymont's Genius Within: The Inner Life of Glenn Gould is how it explores the incongruities between Gould's private reality and his wider image. It investigates Gould's personal life, specifically his long-running affair with painter Cornelia Foss, his drug intake and how his public facade began to take over his existence. Genius Within is packed with compelling interviews with key people in Gould's life, including childhood friends, collaborators and even pop singer Petula Clark (a semi-ironic obsession for Gould). Hozer and Raymont have unearthed some truly extraordinary unseen footage, like the short film Gould made with writer and photographer Jock Carroll in the Caribbean.