It’s hard to believe that, after more than 20 years of posthumous exploitation, there’s any unreleased Kurt Cobain music anywhere. But for the new documentary Montage Of Heck, director Brett Morgen unearthed a few nuggets, including the unreleased Beatles cover we’ve been told of. As it turns out, that cover is an extremely rough acoustic version of the Beatles’ lovely 1964 ballad “And I Love Her.” The version that exists sounds like it was recorded on a beat-up old tape recorder from across a crowded hallway. But you can still tell that, if Cobain had actually put this on wax in a studio, it would’ve been a monster. Check it out below.

Cobain: Montage Of Heck is in a few theaters now, and it airs 5/4 on HBO.