Rock Werchter 2011 organisers have revealed more of the names on their line-up including Digitalism, Bruno Mars and I Blame Coco.
British newcomers The Vaccines will perform alongside Tame Impala, TV On The Radio and Rival Sons.
Manchester experimentalists Everything Everything also play.
As previously reported, The Chemical Brothers, Linkin Park, Kings of Leon, Artic Monkeys, Coldplay, The Black Eyed Peas and Iron Maiden all feature on a huge line-up at the Belgium event.
Tickets for Rock Werchter 2011 are available at €195 for a four-day pass. Friday (1 July) and Saturday (2 July) day tickets have sold out, but Thursday (30 June) and Sunday (3 July) tickets are available at €76.
Rock Werchter 2011 takes place from 30 June to 3 July in Werchter, Belgium.