Maissouille has been making passionate techno music since 1996... Who founded three years later the sound system CO2 with his brother and a friend to satisfy his passion. They organize many free all parties in Northern France, in which Denis happening behind the turntables under the pseudonym "Dj Maissouille". Denis is moving very quickly towards mixes rather Tribe and Hardcore. Many organizers invite him to mix in various evenings, until then. The story is fairly standard, and did nothing exceptional.