Slovak Thrash Metal band Majster Kat was founded in 2001. After performing a lot of concerts including the summer metal festivals in Slovakia and recording thefirst demo record, the the year 2005 is marked with a lot of member changing the band. Since 2006 the band has performed in formation Slymak (vocals), Los (lead guitar), Lukas (guitar), Tapyr (bass) and Bubonix (drums). In this lineup the first ablum called Svätá zvrhlost (in translation it means "Depravity of The Pious") was released in October 2007 under the Czech label Panda Music. Album Svätá zvrhlost ("Depravity of The Pious") contains 12 tracks.
The CD attracts by frequent changing of moods. It contains fast thrash metal songs with melodic lines as well as athmospheric instrumental songs with acoustic guitar passages. All lyrics are in Slovak language and are concerning about the absurdity of the inquisition era and inhumanity of Armed conflicts.