The trailer for HBO's Kurt Cobain: Montage of Heck documentary has been released ahead of its May 4 television premiere.

A press release promises the film, which previously premiered at Sundance Film Festival, features "dozens of Nirvana songs and performances as well as previously unheard Cobain originals" in addition to previously unseen home video, audio recordings, journal entries, song demos and more.

According to The Hollywood Reporter, the doc also includes an unreleased, 12-minute acoustic track from the Nirvana frontman.

Watch the trailer below.