Two deluxe reissue packages also announced to celebrate the album's 20-year anniversary
This year marks the 20-year anniversary of Soundgarden's Seattle grunge classic "Superunknown" and the Chris Cornell-led band is marking the occasion with a special performance at the iTunes Festival during South By Southwest.
On Thursday, March 13, the band will play "Superunknown" in its entirety for the first time ever. The SXSW event will be streamed live via the via iTunes store, available on all personal computers and mobile devices. Those with iOS devices or Apple TV can use the iTunes Festival app to stream the performance in HD.