4 Forests is another experimental album by Brian Dougans under the alias Part-Sub-Merged from 2007 which was released on The Future Sound of London's digital download website. It is the soundtrack to a short film made by the duo called "Part-Sub-Merged" to be released on FSOLdigital.com at some point in the near future. The music is darker than his "Polemical " work with analogue techno beats and synth ambience.