Arcade Fire, Portishead, Arctic Monkeys, The Hives, Gogol Bordello, Flogging Molly and The Sounds have all been added to the line up for the Southside and Hurricane Festival 2011.
These acts will be joining rock bands like Foo Fighters, Blink 182 and dance heads The Chemical Brothers.
The two festivals share the same line up and run simultaneously and are set to be great successes again with tickets being snapped up quickly.
If the Southside and Hurriane 2011 Festivals weren't tempting you before, things have just got a lot more exciting with the addition of these top notch, rocking bands.
Click here to buy Hurricane Festival tickets.