Guillaume's musical sensibility appeared very young, since he began his career as a guitarist at the conservatory at the age of 10. He will take some years of course there.
Enriched by an eclectic musical culture, he chose rock/metal as his main style and founded the band KLONE in 2000. He composed most of the songs on the band's 7 studio albums. Guillaume continues his exploration within Klone and Polar Moon.