Radioskugga was formed in 2002 Sandviken, Sweden. They started out playing crustpunk with some influences from grindcore. A line-up change in 2004 led the band more into black metal, and they started writing songs more carefully developing the sound they have today. Radioskugga puts a lot of effort into the band and the music, and you can hear that loud and clear. They recorded 20 songs November 2005 which remains unreleased until someone wants to release it properly. 5 of the songs were released as a promo in January 2006.