The fourth annual event will take place in Reykjavik from 16-18 June (17), during the summer solstice featuring 72 hours of continual sunlight.
Richard Ashcroft, Pharoahe Monch, Dubfire and Chicago, Illinois house legend Kerri Chandler have also signed up to perform, alongside some of Iceland's biggest acts, like Hogni, Ulfur Ulfur, and GKR.
The Deftones frontman Chino Moreno made history at this year's festival when he performed inside a volcano.
His historic acoustic set took place 400 feet underground in the dormant magma chamber of the Thrihnuagigur volcano.
The event marked the first time in history an artist has performed publicly inside a volcano.
Only 20 paying ticket holders witnessed the magical show, which also featured a set from Icelandic act Snorri Helgason.
It is not known if the feat will be repeated next year.