Christian Marcussen is a musician from Denmark, who composed most of the soundtrack for TimeSplitters Future Perfect.
Christian Marcussen has been known to make occasional posts on the TimeSplitters Music Box message boards, usually in threads concerning the music that he contributed to TimeSplitters Future Perfect. Marcussen was also interviewed by F-Rott from Planet TimeSplitters in 2004.
Marcussen plans to eventually offer music from the TimeSplitters games, as well as cutscenes from TimeSplitters Future Perfect, on his website. He released a mock-up of his plans for the site, viewable here.