Reunited rockers Soundgarden will celebrate the 20th anniversary of their album Superunknown by performing the landmark release in its entirety at the upcoming South by Southwest (Sxsw) festival in Texas.

The grunge stars, who made a comeback in 2010, will headline the third night of the iTunes Festival gigs at the Austin event on 13 March (14), when they will play every track from the 1994 disc.

The special show will feature the return of drummer Matt Cameron, who previously announced he would be sitting out Soundgarden's 2014 tour due to his commitments with his other band, Pearl Jam. Cameron joined the Alive hitmakers in 1998, a year after Soundgarden originally split.

Coldplay and Keith Urban are among the other artists booked to play the iTunes shows at the Sxsw festival.