Soundgarden's grunge classic 'Superunknown' turned 20 in March. To celebrate, it's getting re-released in two deluxe formats on June 2, complete with demos, rehearsal recordings and B-sides that lift the lid on the album's making. Hot on the heels of their original, rough-'n'-ready recording of single 'Black Hole Sun', which was posted online last week, NME can share with you now the unreleased demo of the record's epic title track to enjoy. Check it out below in all its fuzzy, Seattle sleaze-slathered glory.
Soundgarden play Barclaycard British Summer Time in London's Hyde Park on July 4, alongside Black Sabbath, Wolfmother, Faith No More, Motörhead, Soulfly, Gallows and Rise To Remain. 'Superunknown 20' is released on June 2.