The mom and daughter come together to celebrate Kurt Cobain: Montage of Heck at Sundance

By Patrick Gomez
Updated January 24, 2015 08:25 PM
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Credit: Paul Marotta/Getty

Frances Bean Cobain and her mother Courtney Love have had a tumultuous relationship over the years, but a recent project has helped them grow closer.

It all began in 2008 when Love approached director Brett Morgen about doing the first authorized documentary about her late husband, Nirvana frontman Kurt Cobain.

“I had done a movie called The Kid Stays in the Picture about Robert Evans,” Morgen told PEOPLE at the Sundance Film Festival on Saturday. “Courtney had watched that movie daily for about three months and really loved my approach to non-fiction and thought I would be best suited to tell Kurt’s story.”

But things didn’t really come together until Frances got involved as an executive producer on the project, which became the documentary Kurt Cobain: Montage of Heck.

“It was kind of a domino thing. First Courtney came along and then Frances,” Morgen said of making the film. “Frances and I shared the same exact vision for what this film should be. She was really the glue. She is why we are all here.”

Morgen says Cobain’s family members are all “on the same page” about the film, as was evident when Love and her daughter shared a long embrace while taking photos on the red carpet at its premiere during Sundance on Saturday.

“Everyone involved with the film and Nirvana wanted to do this for Frances,” Morgen said. “This movie is for her.”

Kurt Cobain: Montage of Heck debuts exclusively May 4 on HBO.