drumcode favourite harvey mckay returns to the label with a darker new sound. the glaswegian has been a regular contributor over the years, highlighted by the memorable the illusion of control ep in 2014 and his newer work with brother ryan under the alias moniker. earlier this year drumcode released the duos pentatonic ep and featured a mix on adam beyer s radio, which included black dolphin, kickstarting the hype on the track. named after the infamous russian prison, the title track is dark, tough, deeply textured brooding affair, with a menacing touch than runs through its core. mckay then brings in a huge synth line and changes up the dynamic of the track, giving it a powerful and driving feel. retox is a dark and twisted heavy-hitting cut, driven by aggressive drums and bassline, while a hypnotic synth line sustains a sense of tension throughout the six-minute track. concluding the package is cover up, a fantastic stripped back exploration into dark atmospheric techno territory that s tailor made for the winter warehouse raving season.