This documentary is based on 25 hours of audio-taped interviews conducted by noted Cobain biographer Michael Azerrad, who also wrote the American post-punk, pre-grunge, underground rock history tome, Our Band Could Be Your Life. 25 hours of audio-taped interviews given to one person? Jesus. From the looks of the trailer, it’s likely this film will be far less confusing and esoteric than Gus Van Sant’s loosely based Cobain biopic Last Days, since Cobain’s voice narrates the entire film. My only hesitation is the cinematic aspect- just seeing random images, artfully filmed as they may be, as Cobain speaks might be disconcerting.