Head Control System is a multinational Progressive/Alternative Metal project led by Daniel Cardoso (of Sirius and Re:aktor) and Kristoffer Rygg (Ulver. Ex-Arcturus, Ex-Borknagar). Their music is often described as "heavy groove/rock/metal" but Cardoso once claimed the whole project might be "about girls, serial killers, control and the loss of it". While the band's debut Murder Nature was realeased in early 2006, " Severe Damage on Reason and Equilibrium"-EP