Asif Kapadia’s controversial Amy Winehouse documentary eschews sensation and talking heads in favour of heartbreaking footage and difficult questions Related: Asif Kapadia on Amy: ‘The drinking, the bulimia, the drugs – nobody stopped it’ Confessional with punchlines – that’s how Amy Winehouse described her songwriting, providing the key to Asif Kapadia’s sober, unsensational and overwhelmingly sad film about her short and volatile life.