Sarkom was founded in 2003 in Norway (Lørenskog), by Renton and Unsgaard and after composing some songs, Sagstad joined the band, as they started to record a 4 track promo. In 2004 their demo was spread around and they got good critics as well as a couple of minor offers for a record deal. New songs were written and in 2005 they signed a deal with Twilight-Vertrieb and recorded their first fullength album "Aggravation of Mind". This album was released in the beginning of 2006 and received good critics.