wojtek wieslawski

mixing and mastering studio

worked with Behemoth, Vader, Patriarkh and Decapitated.

your rock, metal tracks, mixed to perfection.

professional rock, metal mixing & mastering

now let's work on your band!

25+ years of experience

worked with legendary bands

double Platinum sound engineer

why work with wojtek?

Double Platinum Sound Engineer & Producer.
Co-owner of Hertz Recording Studio & Hertz Instruments.

With over 25 years in the music industry, Wojtek Wiesławski has worked with some of the most iconic metal bands, including Behemoth, Decapitated, Hate, Hour Of Penance, Luxtorpeda, Łydka Grubasa, Patriarkh, Vader, and many more.

His work has earned two Top 50 placements on the Billboard charts, the prestigious Fryderyk Award, and amassed over 150 million streams on YouTube—proving his lasting influence in the era of digital music and streaming.

contact me
listen to my productions

my work

double platinum sound engineer & producer

excellence in mixing
& mastering

Known for his precise and powerful signature sound, Wojtek consistently delivers top-tier productions that redefine the industry standard.

Are you looking for impactful drum tones, crushing guitars, or a perfectly balanced master? You got it! Wojtek will transform your raw tracks into a sonic masterpiece. 

listen to my productions

education & industry expertise

Beyond the studio work, Wojtek shares his vast mixing & mastering expertise through in-person workshops, masterclasses, and via his YouTube channel @Wieslawski_mix_mastering and @HertzDrums, inspiring the next generation of music professionals.

now let's work on your band!