Portishead was to perform at the Benicàssim Festival in Spain .
Portishead were also scheduled to perform at the 2011 Benicàssim Festival , Rock Werchter in Belgium , Paleo Festival in Switzerland , Roskilde Festival in Denmark , the Hurricane/Southside Festivals in Germany , and the Super Bock Super Rock music festival in Portugal .
Portishead -LRB-band-RRB-