Ahh, you know its spring when Death Metal season starts, and concert posters get slapped on every lamppost in Oslo. Death Metal is traditionally Scandinavian. According to Jim Davis of Quora.com, the so-called “growl” or death-growl in the music is often attributed to Viking cultures. When a 10th century Arab merchant visited Denmark, he commented upon their music: “Never before have I heard uglier songs than those of the Vikings in Slesvig. The growling sound coming from their throats reminds me of dogs howling, only more untamed.”
