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The event takes place in Gdynia, Poland from July 2-5

Warpaint, Daughter and Bastille have all been added to the line-up for the Heineken Open’er Festival 2014.

The bands will join previously announced headliners Phoenix, The Black Keys and Pearl Jam at the event, which takes place in Gdynia, Poland. The festival will take place from July 2-5, 2014 and today’s new announcements will all play on July 5. Tickets are on sale at Opener.pl/en and more artists will be announced over the coming months.

Last summer’s festival took place in July 2013 and was headlined by Arctic Monkeys, Kings Of Leon, Blur and Queens Of The Stone Age. In addition, Rihanna performed a bonus gig for people who had four-day festival tickets. Also on the bill were The National, Palma Violets, Savages, Alt-J, Nick Cave & The Bad Seeds, Editors, Disclosure, Tame Impala and Animal Collective. For more information about the event, visit: Opener.pl/en

To check the availability of Open’er tickets and get all the latest listings, go to NME.COM/TICKETS now, or call 0844 858 6765