PARK CITY, Utah (AP) — "Kurt Cobain: Montage of Heck," a fiery, evocative and deeply felt look at one of rock's most misunderstood and tragic figures, presents a portrait of a man and an artist in despair with the aid of never-before-seen home videos, personal notes and archival footage. The film, a fully authorized account of Cobain's life, premiered at the Sundance Film Festival on Saturday and airs on HBO in May. Director Brett Morgen ("The Kid Stays in the Picture") spent eight years putting the movie together.Read more on NewsOK.com