Released in September 1991, NIRVANA's sophomore album and major label debut elevated Kurt Cobain, Krist Novoselic and Dave Grohl from a critically acclaimed Aberdeen, Washington, cult band to generational spokesmen who'd unwittingly created a cultural shift and musical touchstone. Rising to No. 1 the world over by year's end and ultimately selling over 30 million copies worldwide, Nevermind would come to be much more than one of the most successful and influential albums of its or any era. As the album that returned unaffected rock ’n’ roll integrity and passion to the top of the charts, Nevermind would prove a singular inspiration to fans and musicians alike over the last two decades--and will undoubtedly do so for generations to come.

The band's first attempt at mixing Nevermind, though, was a disaster. "I'd be balancing the drums and the guitars," producer Butch Vig tells Rolling Stone, "and Kurt would come and say, 'Turn all the treble off. I want it to sound more like BLACK SABBATH.' It was kind of a pain in the ass." They mutually agreed to bring in a hired hand, SLAYER producer Andy Wallace, to do a final mix; the discarded, original mixes sat in a vault until the reissue.

Now on the occasion of Nevermind's 20th anniversary, Universal Music Enterprises presents a full spectrum re-release worthy of such a pivotal classic on September 27th. With configurations ranging from a four-CD/one-DVD Super Deluxe Edition to a standard digital/CD remaster of the original album, the 20th anniversary reissue of Nevermind makes the most of the occasion, unearthing literally dozens of previously unreleased recordings, obscure B-sides, alternate mixes, radio sessions, studio rarities and live recordings, including a 1991 Halloween concert at Seattle's Paramount Theatre in its entirety.

The limited, numbered Super Deluxe Edition more than lives up to its name as one of the most expansive and ambitious collections of its kind with only 10,000 copies available in North America, and another 30,000 for the rest of the world. The Super Deluxe features not only the original remastered album and accompanying studio and live B-sides, but the first full official release of the pre-Nevermind demos recorded at producer Butch Vig's Smart Studios, as well as boombox recordings of subsequent rehearsals through which the listener can actually experience 'Smells Like Teen Spirit', 'Come As You Are', 'On A Plain' and others that take shape before his or her very ears. The Super Deluxe also offers an altogether new perspective on the finished Nevermind album exclusive to this format in the form of the Devonshire Mixes: the album as produced and mixed by Vig as opposed to the commercially released final version produced by Vig and mixed by Andy Wallace. Rounding out the Super Deluxe are a pair of previously unreleased BBC recordings and the aforementioned 1991 Paramount show available for the first time and exclusive to this format on CD and DVD (which also features all four music videos from Nevermind), as well as a stunning 90-page bound book full of rarely and never- before-seen photos, documents and various other visual artifacts of the Nevermind era.

The Nirvana Nevermind 20th anniversary reissue is also available as a 2-CD Deluxe Edition featuring the remastered album and B-sides, the Smart Studio sessions, boombox rehearsals and BBC sessions, a 4-LP, 180-gram heavyweight vinyl edition featuring the same 40 tracks as the Deluxe Edition, a remastered CD of the original album, and digital versions of the standard and deluxe editions. The Paramount concert, transferred from 16mm film and multi-track audio, is the only known Nirvana concert shot to film and will be available in a 1080p high-definition picture and uncompressed 5.1 surround sound and stereo on stand-alone Blu-ray, along with DVD and digital long form video formats.