Poland's Open'er festival has added two extra names for this year's edition, which takes place between July 2nd and 5th. Lykke Li and Wild Beasts join the already confirmed Warpaint, Pearl Jam, The Black Keys, Interpol and many more.

Lykke Li will make a rare return to Poland and is due to play new songs from her upcoming album I Never Learn, out on May 5th, while indie rockers Wild Beasts will be promoting their recently released album, Present Tense.

For further info and tickets (which are already on sale), go to Open'er Festival's official website.

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