Soundgarden has just been added to the iTunes Festival at SXSW lineup. This is a unique show for the band as they will be celebrating the 20th anniversary of Superunknown.

Soundgarden to headline night three, Thursday March 13, of the iTunes Music Festival at SXSW in celebration of the 20th anniversary of Superunknown

During this iTunes Festival performance at SXSW, Chris Cornell, Matt Cameron, Kim Thayil and Ben Shepherd will perform the album in its entirety for the first time ever.

All five nights of the iTunes Festival will be available to enjoy for free as a live and on-demand stream via the iTunes Store on your iPhone, iPad, iPod touch, Mac or PC. Performances can also be seen in the iTunes Festival app on your iOS device or with Apple TV in stunning HD

iTunes Festival at SXSW line up:

March 11: Coldplay, Imagine Dragons and London Grammar
March 12: TBA
March 13: Soundgarden
March 14: Pitbull, ZEDD and G.R.L
March 15: Keith Urban, Willie Nelson and Mickey Guyton