The xx and Ponytail have been added to the line up for Matt Groening's ATP Weekend this May.
The Simpsons and Futurama creator's festival already boasts the likes of Iggy & The Stooges, Built To Spill, Panda Bear, Deerhunter, Broadcast, Boredoms, Coco Rosie and many, many more.
Groening's All Tomorrow's Parties weekend takes place at Butlins in Minehead on May 7th to the 9th 2010.
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