Alt-J, Jake Bugg, Ben Howard, Mumford And Sons, The Killers and Muse are all lined up for BRIT Awards this year.
The Killers and Queens of the Stone Age are going to top the bill at Benicassim in Spain in July.
Also confirmed for this year's Festival are Azealia Banks, Jake Bugg, Palma Violets, Echo Lake, Splashh and Swim Deep.
Vince Power spoke of his delight regarding the first acts to be announced; "I am really excited to announce The Killers and Queens of the Stone Age as our first headline acts for FIB Benicàssim 2013. After a fantastic festival in 2012 we are looking to forward to excelling ourselves this year with even more incredible acts gracing our stages over the four festival days."
Radio X is once again the exclusive radio partner so we'll have more line-up news in the coming weeks.