Kat & Roman Kostrzewski

Kat & Roman Kostrzewski ("Kat & RK") was a Polish thrash metal band formed by Roman Kostrzewski and Ireneusz Loth after they had left their original band KAT in 2004. Some of the fanbase of KAT views Kat & Roman Kostrzewski as its successor,^{[citation needed]} mainly due to the characteristic vocals of Roman, his lyrics and choice to sing in Polish as in most of KAT's original albums.

Kat & Roman Kostrzewski
Kat & Roman Kostrzewski, 2010
Background information
Origin	Katowice, Poland
Genres	Thrash metal, Black metal
Years active	2004–2022
Labels	Mystic Production
Members	Roman Kostrzewski Krzysztof Pistelok Ireneusz Loth Piotr Radecki Michal Laksa
Past members	Paweł Pasek Waldemar Moder
Website	http://www.kat.info.pl

Since 2004 the group has toured extensively through Poland, while composing material for their first album Biało-czarna" (White-and-black), which was released in April 2011 by Mystic Production. The first samples off the new album were released in late 2010.

On February 10, 2022, Roman Kostrzewski died of cancer at the age of 61.^[1][2]

Band members

Final lineup Roman Kostrzewski – vocals (2004–2022) (died in 2022) Michał Laksa – bass (2004–2022) Krzysztof "Pistolet" Pistelok – guitar (2005–2022) Jacek Hiro – guitar (2015–2022) Jacek Nowak – drums (2019–2022)

Former members Ireneusz Loth – drums (2004–2019) Piotr Radecki – guitar (2004–2009, 2010–2015, died in 2025) Waldemar "Valdi" Moder[3] – guitar (2004–2005) (died 2012) Paweł "Bajtel" Pasek – guitar (2009–2010, 2015)

Live members Krzysztof "Fazi" Oset – bass (2008, 2009) Jarosław Niemiec – bass (2015) Session musicians Piotr "Pienał" Pęczek – drums (2014)

Discography

Studio albums

Title	Album details	Peak chart positions
		POL [4][5][6]
Biało-czarna	Released: April 11, 2011[7] Label: Mystic Production Formats: CD, CD+LP	4
Buk - akustycznie	Released: September 8, 2014[8] Label: Mystic Production Formats: CD, CD+LP, digital download[9]	7
666	Released: September 13, 2015[10] Label: Mystic Production Formats: CD, CD+LP	6
Popiór	Released: March 1, 2019 Label: Independent Formats: CD, LP, digital	–
"—" denotes a recording that did not chart or was not released in that territory.

Video albums

Title	Video details
Życie po życiu	Released: December 3, 2007[11] Label: Mystic Production Formats: DVD