The definitive documentary on Kurt Cobain, entitled Kurt Cobain: Montage of Heck, premiered earlier this year at the Sundance Film Festival. On May 4th, HBO will air the in depth look at NIRVANA’s leader following a short theatrical run. Today, they’ve released the new trailer for the doc, which you can watch below.

Directed by Brett Morgen, the film features “no-holds-barred access to Kurt Cobain’s archives, home to his never-before-seen home movies, recordings, artwork, photography, journals, demos, personal archives, family archives and songbooks.”

It also includes animated sequences and some unreleased Cobain songs. The soundtrack, which doesn’t yet have a release date, is also said to feature a previously unheard 12-minute acoustic track.

Cobain’s daughter with Courtney Love, Frances Bean Cobain, serves as the film’s executive producer.