Kat is a Polish heavy metal band formed in 1979 in Katowice, Poland. They have been accused, mainly by the Polish media, of promoting Satanism.
In Polish "kat" means executioner. KAT is one of the most important bands in Polish heavy metal overall, and is also mentioned as one of the main precursors of thrash and even black metal genres in this country. KAT's most famous album is Oddech wymarłych światów (The Breath of Extinct Worlds), considered an opus of Polish heavy metal.
The band is best known for tracks "Czas zemsty" (Time of revenge), "Łza dla cieniów minionych" (A tear for the shadows gone), "Wyrocznia" (Oracle) and "Noce Szatana " (The nights of Satan).