Greatly contrasting with the sonority of the band's previous releases, Šlágry sees them "virtually abandon[ing] the operatic black metal of previous releases in favor of modernist electronic music", and "shar[ing] publishing credits with Carl Czerny, Otto Katz and Giuseppe Verdi, mixing bits of metal, folk and musique concrète into a style based on the classical avant-garde", as they put it in the album's liner notes.

Other Master's Hammer members Necrocock, Monster, Mirek Valenta and Silenthell are noticeably absent from the album; only vocalist Franta Štorm and keyboardist Vlasta Voral took part in its recording.

Master's Hammer took Berry's vocals from the original version and greatly slowed their pitch, superimposing them over a new instrumental made by them.

Ukrainian black metal band Drudkh covered "Indiánská píseň hrůzy" on their 2010 EP Slavonic Chronicles.

Ian Christe wrote that "Master's Hammer […] have become witty musique moderne composers with Šlágry, trading in distortion for traditional orchestral instrumentation while keeping oddball arrangements that make metal appealing".