Question: From which city in Norway hails the black metal band which played at the Bloodstock Open Air heavy metal festival in Walton-on-Trent?

full_context: Document 1: Download Festival: Download Festival is a British rock festival, held annually at Donington Park in Leicestershire, England, since 2003. It is the most popular British summer rock and heavy metal festival and has hosted some of the genres' biggest names, including Saxon, Black Sabbath, Slipknot, Metallica, Iron Maiden, Motörhead, Aerosmith, AC/DC, Def Leppard, Kiss, Judas Priest, Status Quo, Mötley Crüe, Journey, ZZ Top, Whitesnake, Thin Lizzy, and Guns N' Roses. The 2015 festival featured massive technological surveillance by police in conjunction with festival organizers Live Nation UK. RFID wristbands and facial recognition technology was used to compare visual scans of attendees against a European criminal database.
Document 2: Blizzard Beasts: Blizzard Beasts is the fourth studio album by Norwegian black metal band Immortal. It was released on 20 March 1997 through Osmose Productions. It is the last Immortal album to feature founding member Demonaz Doom Occulta on guitar, and the first to feature Horgh on drums. Demonaz was later diagnosed with acute tendinitis which prevented him from playing guitar at the required speed for Immortal's music. Stylistically, "Blizzard Beasts" has primarily songs that are less than three minutes long, contrasting with Immortal's usual longer song lengths.
Document 3: Olve Eikemo: Olve Eikemo (born 27 June 1973), better known by his stage name Abbath Doom Occulta or simply Abbath, is a Norwegian musician best known as a founding member of the black metal band Immortal. Before founding Immortal, Abbath performed with Old Funeral alongside future Immortal member Demonaz. While working with Old Funeral, he also joined Demonaz's band Amputation which later became Immortal. He also plays bass in Demonaz's eponymous project.
Document 4: Bloodstock Open Air: Bloodstock Open Air is an English heavy metal festival held annually at Catton Hall in Walton-on-Trent, Derbyshire, since 2005. Bands that have played at the festival over the years include Twisted Sister, Saxon, Mastodon, Gojira, Behemoth, Slayer, Anthrax, Cannibal Corpse, Venom, Trivium, Rob Zombie, Emperor, Alice Cooper, Motorhead, Kreator, Blind Guardian, Amon Amarth, Megadeth, Testament, Exodus, Immortal, Morbid Angel, Machine Head, Lamb of God, and hundreds of others. Originally on one stage only, the festival expanded to incorporate a second stage in 2006. Known simply as The Unsigned Stage, it was designed to provide a platform for the next generation of metal talent to reach a wider audience. In 2010 it was renamed The New Blood Stage.
Document 5: All Shall Fall: All Shall Fall is the eighth studio album by Norwegian black metal band Immortal. The album was released in Europe on September 25, 2009, and in the US on October 6, 2009. The only album to feature bassist Apollyon and the last to feature vocalist/guitarist Abbath Doom Occulta.
Document 6: Abbath (band): Abbath (stylized as ABBATH) is a black metal band formed in 2015 by former Immortal guitarist and vocalist Abbath Doom Occulta after departing from Immortal earlier in 2015. The band released their first album, "Abbath", on January 22, 2016, and played live for the first time at Tuska Open Air 2015.
Document 7: The Older Ones: The Older Ones is the first compilation album by Norwegian blackened death metal band Old Funeral, which was made up by key players in the Norwegian black metal scene, including bassist/vocalist Olve "Abbath" Eikemo (Immortal), guitarist Harald "Demonaz" Nævdal (Immortal) and guitarist Kristian "Varg" Vikernes (Burzum). By the time this album was released, the members had already gone their separate ways, with Immortal a going concern for Abbath and Varg in jail.
Document 8: Give it a Name: Give it a Name, also known as GIAN, (and Give It a Name Incoming in 2009), named after an At the Drive-In song, was an annual British rock music festival, normally held on the weekend nearest to the end of April. The first festival took place on 2 May 2005 at Alexandra Palace, North London. In 2006, Give it a Name became a paired, two-day festival, taking place at the MEN Arena, Manchester, and Earls Court, London. 2007 saw the festival extend to three days and six different locations, including events for the first time in Scotland, France and Germany. Give it a Name tended to feature post-hardcore, indie rock and alternative bands.
Document 9: Immortal (band): Immortal is a black metal band from Bergen, Norway, founded in 1991 by frontman and bassist Abbath Doom Occulta (Olve Eikemo) and guitarist Demonaz Doom Occulta (Harald Nævdal). The pair worked with various drummers (including Grim, Armagedda and Hellhammer), and were later joined by current drummer Horgh (Reidar Horghagen) in 1996.
Document 10: Devilstone Open Air: Devilstone Open Air (aka "Velnio Akmuo" in Lithuanian) is a summer open air rock and metal music festival. It takes place annually since 2009 in the town of Anykščiai, in Lithuania. Devilstone Open Air has included performers playing black metal, death metal, power metal, thrash metal, sludge metal, doom metal, post rock, stoner rock, and progressive rock music genres. Music bands from Europe, North and South America, and Australia have performed in the festival. Devilstone Open Air is usually held in the mid-summer, around the third weekend of July.
Document 11: List of heavy metal festivals: This is an incomplete list of heavy metal festivals. Heavy metal (or simply metal) is a genre of rock music that developed in the late 1960s and early 1970s, largely in the United States and the United Kingdom. With roots in blues rock and psychedelic rock, the first heavy metal bands such as Led Zeppelin, Black Sabbath and Deep Purple attracted large audiences, and during the late 1960s and mid-1970s these band and others in their genre were featured at a number of historic rock festivals. Judas Priest helped spur the genre's evolution by discarding much of its blues influence.
Document 12: Bangalore Open Air: Bangalore Open Air (BOA) is India's only dedicated heavy metal open air music festival which takes place yearly in Bangalore, India. Bangalore Open Air, in collaboration with Wacken Open Air (currently considered as the biggest heavy metal festival in the world) is into its 6th edition as of 2017. The festival also hosts Wacken Metal Battle's Indian leg, with the winning band getting an opportunity to play at Wacken Open Air. India is the 27th Country to participate in the W:O:A Metal Battle which has been organised in the country since 2011.
Document 13: The Wacken Carnage: The Wacken Carnage is a CD/DVD set of death metal band Bloodbath at a very rare live appearance recorded on August 5, 2005, at the Wacken Open Air Festival in Germany. At that time, this live appearance was presented as the only Bloodbath show there would ever be, but Bloodbath has since headlined Party.San Metal Open Air in Germany on August 8, 2008, Pellavarock in Finland on August 9, 2008, Hellfest in France on June 22, 2010, and Bloodstock Open Air in England on August 15, 2010.
Document 14: Harald Nævdal: Harald Nævdal (born 6 July 1970) known by his stage names Demonaz Doom Occulta and Demonaz, is a Norwegian musician best known as the founding guitarist and chief lyricist for the black metal band Immortal.
Document 15: Hell &amp; Heaven Metal Fest: Hell & Heaven Metal Fest (H&H, el Hell, or Festival Hell and Heaven) is an open air heavy metal music festival. It takes place annually during Fall or Spring, near Mexico City in Texcoco, located in the State of Mexico, in the central part of the country. With over 30,000 festival visitors, it attracts metal music fans of all subgenres including thrash metal, black metal, death metal, power metal, gothic metal, folk metal, and even metalcore, nu metal, hard rock from all over the world. The festival is mostly attended by a Mexican audience from all around the country, but attracts a large number of visitors from Central and South America, as well as fans from Europe and other parts of the world.
ground_truth: Bergen