The National, Deadmau5 for Open'er 2011
More names revealed for Poland festival
Daniel Lomas - 11 March 2011
British indie band Two Door Cinema Club
will also perform at the festival alongside the previously announced Coldplay,
Pulp, M.I.A, Primus and Foals.
Four-day camping tickets are on sale now, priced at £85/410PLN, with day tickets and three-day packages also available.
Heineken Open'er takes place at Gdynia, Poland from 30 June to 3 July 2011.
Click here to buy Heineken Open'er tickets.