Kurt Cobain documentary, first-ever authorized, to air on HBO in 2015

Kurt Cobain is the focus of a new documentary that probes the life and untimely death of the Nirvana singer-guitarist.

It will be released in theatres next year and air exclusively on HBO, the network said Tuesday.

Co-produced by HBO Documentary Films, Kurt Cobain: Montage of Heck is the first documentary made with the co-operation of Cobain's family. It draws on home movies, journals and other personal archives. It features Nirvana songs and performances and previously unheard Cobain originals.

The film's director-producer, Brett Morgen, has previously made the documentaries Crossfire Hurricane, about the Rolling Stones, and The Kid Stays in the Picture.

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"Like most people, when I started, I figured there would be limited amounts of fresh material to unearth," Morgen told Variety.

"However, once I stepped into Kurt’s archive, I discovered over 200 hours of unreleased music and audio, a vast array of art projects (oil paintings, sculptures), countless hours of never-before-seen home movies, and over 4000 pages of writings that together help paint an intimate portrait of an artist who rarely revealed himself to the media."

Frances Bean Cobain, Kurt Cobain’s daughter with Courtney Love, is an executive producer on the project, according to Variety.

Cobain formed Nirvana in 1985, and by the early 1990s was decreed the spokesman of Generation X. He died of suicide in 1994 at age 27.