Sadist confirmed at Hellfest Open Air 2016! Asher November 4, 2015 News Sadist have been confirmed for next year’s wonderful Hellfest Open Air Festival. The event will take place in Clisson, France on June 17, 18 and 19, 2016. Over 100 “mega” bands have been announced, including Rammstein, Black Sabbath, Megadeth, Korn, Slayer, Ghost, Paradise Lost, Bring Me The Horizon, Anthrax and more. Sadist will play on 17th, June 2016.