Viking metal is a style of heavy metal music with origins in black metal and Nordic folk music, characterized by a common lyrical and thematic focus on Norse mythology, Norse paganism, and the Viking Age. Viking metal is quite diverse as a musical style, to the point where some scholars consider it more of a term than a genre, but it is typically manifested as black metal with influences from Nordic folk music. Some common traits include a slow-paced and heavy riffing style, anthemic choruses, use of both clean and harsh vocals, a frequent reliance on folk instrumentation, and often the use of keyboards for atmospheric effect. Viking metal developed in the 1980s through the mid-1990s as a rejection of Satanism and the occult, instead embracing the Vikings and paganism as the leaders of opposition to Christianity. It is similar, in lyrics, sound, and thematic imagery, to pagan metal, but pagan metal has a broader mythological focus and utilizes folk instrumentation more extensively. Most Viking metal bands originate from the Nordic countries, and nearly all bands claim that their members descend, directly or indirectly, from Vikings. Many scholars view Viking metal and the related black, pagan, and folk metal genres as part of broader neopaganist and neo-völkisch movements as well as part of a global movement of renewed interest in, and celebration of, local and regional ethnicities.