The music accompanying the propaganda video which the perpetrator of the 2011 Norway attacks , Anders Behring Breivik , uploaded to video sharing sites including YouTube at the same time that he published his manifesto , comes from the '' Age of Conan : Hyborian Adventures '' soundtrack . Breivik writes of Bøksle 's voice that it is the perfect sound to listen to when one commits acts of martyrdom . During his trial he also testified that he uses this music , particularly the song " Ere the World Crumbles " when he meditates , as he did in preparation for his terrorist acts on 22 July 2011 . Bøksle said in a press release in the week following the attacks that she distanced herself from Breivik 's use of the music . The music 's composer , Knut Avenstroup Haugen , has done the same
2011 Norway attacks
2011 Norway attacks
Age of Conan