Cobain: Montage of Heck has been making waves since its debut at Sundance last month and now, at last, we have a trailer. By the looks of it, the film won't disappoint.

Offering as personal a look at Cobain's life as anyone has yet seen and featuring previously unseen footage and unheard recordings by the Nirvana frontman, Brett Morgen's film does not look to skimp on the darkness that surrounded the man and the toll success had on him.

We don't have an Irish release date yet but stay tuned to Hot Press for updates ...