Slayer is an American thrash metal band who is going to say farewell to their fans in Poland during the upcoming concert in Gliwice. After 35 years of making the most brutal, breathtakingly aggressive, all hell breaking loose music ever created, being one of the four bands that defined an entire musical genre and being the band that other heavy acts are measured against and aspire to, Slayer says good bye. The band released 12 studio albums, many live recordings, played almost 3000 concerts all over the world and received many musical awards, including five Grammy nominations and two Grammy awards. It is the last concert of one of the greatest thrash/metal/punk bands of this or any age. The band's special guest will be a Polish death metal band, Behemoth.