The documentary Kurt Cobain: Montage of Heck will play on HBO in a couple weeks, but you can hear one of the previously unreleased songs from it right now.
Dave Grohl is undeniably a major talent in rock music. When Dave first started Foo Fighters, he would not take questions about Nirvana and Kurt Cobain. Most people felt he was doing it as a publicity stunt. That was not the reason.