In honor of Rolling Stone's Nirvana collector's issue, we've dug deep into the catalog of the chaos-embracing sludge-pop titans who changed the world. We've ranked all 102 album cuts, B-sides, bonus tracks, officially released covers, bootlegger-traded originals, home demos, Peel Sessions, and 4-track experiments we could find, from Nirvana's formation in 1987 to their McCartney-assisted reunion in 2013. It's no secret that the 38 songs on Nirvana's three classic albums blurred the lines between punk's most subterranean muck and pop's highest reaches. But they also left behind a wealth of other material from the shaggy to sublime, from combustible to calm, from coulda-been hits to unfinished sketches. Here it is, from Aero to Zeppelin, and everything in between.