Kurt Cobain: Montage Of Heck director Brett Morgen says he warned Kurt's mother Wendy O'Connor about some of the scenes in the film , including Cobain discussing his drug use and intimate footage of him and his wife Courtney Love.

Morgen tells Rolling Stone: "When I showed Wendy the film for the first time, I told her there were things that no mother should see. And it was very difficult and painful for me to show her some of the stuff in the third act of the film.

"I know that she would prefer that not be in the movie, and I don't blame her. Even seeing him having intimate relations with Courtney - I don't think Kurt would have wanted Wendy to see that.