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) and "Wyrocznia" (Oracle).

Firstly he invited drummer Ireneusz Loth to the band, and shortly after, they were joined by bassist Tomasz Jaguś and another guitarist, Ryszard Pisarski.

The line-up was filled out by guitarist Wojciech Mrowiec and in 1984 KAT released the debut single "Noce szatana / Ostatni tabor" (Polish for The Nights of Satan / The Last Train).

In 1986 KAT released their debut album, Metal and Hell with a Belgian productions company named Ambush Records with the producer Jos Kloek.

In 1994 in Wisła a new album entitled "Ballady" (Ballads) was compiled and recorded in a Christian Studio – Deo Rocording, which proved to argue against the publics' and journalists' accusations of Satanism.

In 1996, KAT released the albums "Róże miłości najchętniej przyjmują się na grobach" (Roses of love best flourish on graves), following this the conflict between Luczyk and Kostrzewski re-ignited.

During this time, vocalist Henry Beck formed his own band, and Adam Harris Jasinski (who was discovered by Luczyk at a cover festival) played as the new bassist.

With the new line-up, Kat signed a worldwide contract with a German productions company Pure Steel Records and released their newest album titled Without Looking Back on 14 June 2019.