Just over twenty years ago, Nirvana released In Utero. To celebrate the anniversary of the band's final record, Spotify produced a majestically curated package of the history behind it. This is the goods.

The audio documentary is the first installment of Spotify Landmark, a new series about important moments in music history. "The Real Story of Nirvana's 'In Utero'" has interviews with bassist Krist Novoselic as well as a fascinating dive into the recording process with the album's producer Steve Albini. These guys aren't the easiest guys to get on tape, so it's a pretty special little package.

Spotify Landmark is free to everyone and no sign-up is required through Spotify-Landmark.com. As we've learned with battle for the streaming video throne, exclusive content like this goes a long way towards winning people over to one service or another. Curiously, though, Spotify is choosing not to force a sign-up for the content, which is a gamble on the value of good publicity. It or may not pay off—we're just glad this awesome doc exists. [Spotify Landmark]