Brett Morgen, who directed The Rolling Stones film Crossfire Hurricane, has given an outline of the Kurt Cobain film he’s been working on for the past five years.

Speaking to NME, Morgen said that just as the tone of Crossfire Hurricane had been dictated by its subject, the as-yet-untitled film about the Nirvana frontman would too be an embodiment of his character.

Morgen said: “If you think about Kurt, he’s a contradiction. He could be sincere and sentimental, and also ironic and sarcastic. He was sweet and sour. He was incredibly funny too, and the film has to reflect his sprit.

He added: “The thing about him people might not know too is that he was an incredible visual artist and left behind a treasure chest of comic books, paintings, Super8 films, all sorts. We’re hoping the Cobain film, that’ll hopefully be released in 2014, will be this generation’s The Wall – a mix of animation and live action that’ll allow the audience to experience Kurt in a way they never have before. It’s very ambitious.”

He went on to explain it was Courtney Love and Cobain’s estate that had brought him in to work on the film, and after years of planning and development, it’s recently come together.

Crossfire Hurricane, Morgen’s film about the Rolling Stones from formation up until 1981, was recently shown in selected cinemas to mark the band’s 50th anniversary. It was also broadcast on the BBC, and is released on DVD on Monday, January 7.