WASHINGTON — Kurt Cobain fans may soon be in nirvana. This after the announcement that an unreleased Cobain song will appear in the new HBO documentary “Kurt Cobain: Montage of Heck,” according to CNN. The film’s director, Brett Morgen, recently tweeted his excitement for the new song:

Listening to a mind blowing 12 minute acoustic Cobain unheard track that will be heard on the montage of heck soundtrack. Hello @truefalse — Brett Morgen (@brettmorgen) March 7, 2015

“Montage of Heck” has been touring the festival circuit, including a sold-out show at Sundance. It debuts on television on May 4.