There are multiple artists with this name:
1) Sworn is from Bergen, Norway, and plays Melodic Black Metal with elements from heavy metal and death metal.
It started out as a one man band by Christoffer Kjørsvik in 2005. He created the demo Night Supremacy and self-released it. Lars Jensen from Myrkgrav did the vocals on this recording as a session-vocalist. The demo received great feedback, and not long after the release