The new Kurt Cobain documentary will focus on his mother, wife Courtney Love and bandmate Krist Novoselic.

Filmmaker Brett Morgen recently announced the release of 'Kurt Cobain: Montage of Heck' - the first authorised film about the late Nirvana frontman - but Bruce Pavitt, the founder of the group's first record label Sub Pop, has confirmed he hasn't been interviewed for the project.

The new Kurt Cobain documentary to focus on interviews only with his mother, wife Courtney Love and bandmate Krist Novoselic.

He said: "Instead of having a number of talking heads, Morgen told me he's interviewing three key personalities in Kurt's story; Courtney Love, Krist Novoselic and Kurt's mom.

"Then there's tons of home video footage. I think it's going to be really interesting."

Bruce believes the film - which will feature "dozens" of performances and previously-unheard material - will be a "fascinating" insight into the troubled rocker, who committed suicide in 1994.

He added to NME magazine: "I think it's going to be really very good. As a psychological study of Kurt, it's going to be really fascinating.

"From the sound of it, it'll go deep into Cobain's psyche and the impact of that band."

The documentary will air on HBO in the US next year, though an international release has yet to be scheduled."