A bunch of previously unreleased Nirvana mixes and demos have leaked online, and Reddit users have identified and offered info on the tracks, which are below. There’s an outtake of “Sappy” from the band’s Sound City recording sessions, two alternate takes of “Old Age,” and a new mix of “Verse Chorus Verse” from the same session. The new tracks also include an instrumental version of “Heart-Shaped Box” with an extended guitar solo from 1993, new takes of “Seasons In The Sun” and “Onward Into Countless Battles,” and a demo version of “Milk It.” There are also demos/alternative versions of “I Hate Myself And I Want To Die” and “Scentless Apprentice” plus alternative mixes of “Gallons Of Rubbing Alcohol Flow Through The Strip,” “Tourette’s,” and “Here She Comes Now,” a version of “Polly,” and another new take of “Verse Chorus Verse.” Listen below.

“Sappy” (Nevermind Outtake 1991) Recorded in May-June, 1991 Sound City Studios, Van Nuys, CA

“Old Age” (Alt Take – Mix 1) Recorded in May-June, 1991 Sound City Studios, Van Nuys, CA

“Old Age” (Alt. Take – Mix 2) Recorded in May-June, 1991 Sound City Studios, Van Nuys, CA

“Heart-Shaped Box” (Instrumental 1993) Recorded in February 12-26, 1993 Pachyderm Studios, Cannon Falls, MN

“Seasons In The Sun” (Alt. Mix) Recorded in January 19-21, 1993 Ariola BMG Studios, Rio de Janeiro, BR

“Onward Into Countless Battles” (Alt. Mix) Recorded in January 19-21, 1993 Ariola BMG Studios, Rio de Janeiro, BR

“Milk It” (Demo – Alt. Mix) Recorded in January 19-21, 1993 Ariola BMG Studios, Rio de Janeiro, B

“Verse Chorus Verse” (Alt. Take 1991) Recorded in May-June, 1991 Sound City Studios, Van Nuys, CA

“I Hate Myself And Want To Die” (Demo – Alt. Mix) Recorded in January 19-21, 1993 Ariola BMG Studios, Rio de Janeiro, BR

“Gallons Of Rubbing Alcohol Flow Through The Strip” (Alt. Mix) Recorded in January 19-21, 1993 BMG Ariola Ltda., Rio de Janeiro

“Scentless Apprentice” (Demo – Alt. Mix) Recorded in January 19-21, 1993 BMG Ariola Ltda., Rio de Janeiro, BR

“Tourette’s” (Alt. Mix) Recorded in February 12-26, 1993 Pachyderm Studios, Cannon Falls, MN

“Here She Comes Now” (Alt. Mix) Recorded in April 2-6, 1990 Smart Studios, Madison WI

“Polly” (Alt. Mix) Recorded in April 2-6, 1990 Smart Studios, Madison WI

“Come As You Are” (Alt. Take) Recorded in May-June, 1991 Sound City Studios, Van Nuys, CA

“Moist Vagina” (Alt. Take) Recorded in February 12-26, 1993 Pachyderm Studios, Cannon Falls, MN

“Pennyroyal Tea” (Alt. Take) Recorded in February 12-26, 1993 Pachyderm Studios – Cannon Falls, MN