Brett Morgen on His Astonishing Cobain Film: 'Kurt Isn't Performing for Anyone'

I first met Brett Morgen – the writer, director and producer of the HBO documentary, Kurt Cobain: Montage of Heck – in 2008 at the Guggenheim Museum in New York. We were seated next to each other at a dinner celebrating the opening of a new exhibit. Morgen, who co-directed…