Kurt Cobain: Montage of Heck, the forthcoming HBO Kurt Cobain documentary that’s the first to get both his wife (Courtney Love) and daughter’s (Frances Bean Cobain, who’s an executive producer) approval, already looks like it’s going to be a fascinating film for any Nirvana fans. Now a New York Times article about the doc, along with an excerpt from the film, make it look even more interesting. The clip features an interview with bassist Krist Novoselic in which he recalls playing a “show” at a house in their early days in front of two people. “He was working at the time as a janitor, but he’d always have to do some kind of art, usually defacing something,” Novoselic says. “He never had idle hands, it just came out of him, he had to express himself.” It also shows the show, with two bored-looking (or perhaps high) kids watching Nirvana play inchsed from where they’re sitting.

The Times article states that director Brett Morgen expected the film would take a year and a half to make. Instead, it took eight.  The time extended on the filming and production of the Montage as discussions over rights and a courtroom  battle with Love and her mother took months on end. Also, it mentions that Dave Grohl wasn’t interviewed for the film, a decision that some might find curious, but given Sonic Highways, it’s probably fortunate that HBO doesn’t suffer from Grohl overload.

Kurt Cobain: Montage of Heck will premiere on May 4, and is screening at select theaters now.