A$AP Rocky, Alt-J, Major Lazer, Kendrick Lamar, Kasabian, Mumford and Sons, Hozier, Modest Mouse, Faithless, D'Angelo and the Vanguard, Of Monsters and Men.
This huge Polish festival is held in an airfield with room for around 20,000 tents. Assuming that no planes land during the festival and cause a whole lot of bother, there'll be around tens of thousands of punters enjoying various giants from the worlds of rock, indie, hip hop and dance. A$AP Rocky, Kasabian, Major Lazer, Kendrick Lamar and – yep – the Mumfords are a few of the big names announced so far, with lots more to come.