In June 2017, Polish black/death metal band Behemoth—genre pioneers with albums like The Satanist (2014), earning a Grammy nomination and over 500,000 copies sold—performed at Rock Hard Festival, an annual event launched in 2003 in Gelsenkirchen, Germany, as a platform for heavy music emphasizing thrash, black, and death among 10,000 attendees at Amphitheater Gelsenkirchen. Their hour-long main stage set, captured in high quality, embodied the European The Satanist tour climax, where Adam "Nergal" Darski's aggressive riffs merged with Zbigniew "Inferno" Promiński's drum power and theatrical elements to spark collective ecstasy under summer skies. Featuring tracks like "Blow Your Trumpets Gabriel", "Ora Pro Nobis Lucifer", and "O Father O Satan O Sun!", this show highlighted their leadership in modern extreme metal, turning the festival grounds into a realm of rebellion and unity.