Zatop alias KOSSA is a Drum & Bass DJ who started his first mix experiments in mid-2006 on Mixvibes music software, six months later, switching to Analog to start sharpening his style and begin buying vinyl released on Offkey, Subsintenz, Freak, Position Chrome etc. that they have been learning to mix for two years. In 2009 he performs for the first time in Opava, where he meets DNB Promoter Djeezzy, with whom he begins to cooperate fully on events known as Drum'N'Noize, in 2010 he first performs in Ostrava Helax on Fatal Terror, where he meets C-Phon and Elvis who form the DJs duo known as Fatalerr. In 2011, the transition to CD-players comes with the first experiments in Sony Sound Forge 9 (DAW) to begin mastering, and in 2014 also begins to learn in Cubas 5, Wavelab 6 and iZotope RX to learn their own music production or just projecting what a setter would be. So far, he has been able to perform with names such as No Money, Billain, Machine Code, Silent Witness, MLDJ, Allied,