Question: What was the former name of the Swedish band formed in 1989 with a music style that employs highly melodic guitar riffs, often borrowed from traditional heavy metal?

full_context: Document 1: Death (metal band): Death was an American death metal band from Orlando, Florida, founded in 1983 by guitarist and vocalist Chuck Schuldiner. Death is considered to be one of the most influential bands in heavy metal and a pioneering force in death metal. Its debut album, "Scream Bloody Gore", has been widely regarded as the first death metal record, while the band's driving force, Chuck Schuldiner, is acknowledged as the originator of extreme metal. Death had a revolving lineup, with Schuldiner being the sole consistent member. The group's style also progressed, from the raw sound on its early albums to a more sophisticated one in its later stage. The band ceased to exist after Schuldiner died of glioma and pneumonia in December 2001, but remains an enduring metal band.
Document 2: Dark Tranquillity discography: The following is the discography of Dark Tranquillity a six-piece Swedish Melodic death metal band which was formed in Gothenburg in 1989 as Septic Broiler. They are one of the longest-standing bands from the original Gothenburg metal scene. As of 2013, their formation consists of vocalist Mikael Stanne, guitarists Martin Henriksson and Niklas Sundin, keyboardist Martin Brändström and drummer Anders Jivarp.
Document 3: List of melodic death metal bands: This is a list of melodic death metal bands. Melodic death metal is a heavy metal music style that combines elements from the new wave of British heavy metal (NWOBHM) with elements of death metal. The term Gothenburg metal is often used to describe bands associated with or stylistically similar to the melodic death metal scene that originated around Gothenburg, Sweden.
Document 4: Katatonia: Katatonia is a Swedish metal band formed in Stockholm in 1991 by Jonas Renkse and Anders Nyström. The band started as a studio-only project for the duo, as an outlet for the band's love of death metal. Increasing popularity lead them to add more band members for live performances, though outside of the band's founders, the lineup was constantly changing, revolving door of musicians throughout the 1990s, notably including Mikael Åkerfeldt of the band Opeth for a period. After two death/doom albums, "Dance of December Souls" (1993) and "Brave Murder Day" (1996), problems with Renkse's vocal cords coupled with new musical influences lead the band away from the screamed vocals of death metal to a more traditional, melodic form of heavy metal music. The band released two more albums, "Discouraged Ones" (1998) and "Tonight's Decision" (1999), before settling into a stable quintet lineup for all of 2000's. The band released four more albums with said lineup - "Last Fair Deal Gone Down" (2001), "Viva Emptiness" (2003), "The Great Cold Distance" (2006), and "Night Is the New Day" (2009), with the band slowly moving away from their metal sound while adding more progressive rock sounds to their work over time. While lineup changes started up again into the 2010s, Renkse and Nyström persisted, and the band continued to release music, including "Dead End Kings" (2012) and their most recent, their tenth studio album, "The Fall of Hearts", released on May 20, 2016.
Document 5: Darkthrone: Darkthrone is a Norwegian heavy metal band. It formed in 1986 as a death metal band under the name Black Death. In 1991, the band embraced a black metal style influenced by Bathory and Celtic Frost and became one of the leading bands in the Norwegian black metal scene. Their first three black metal albums—"A Blaze in the Northern Sky", "Under a Funeral Moon" and "Transilvanian Hunger" (sometimes dubbed the "Unholy Trinity") — are considered the peak of the band's career and to be among the most influential albums in the genre. For most of this time, Darkthrone has been a duo of Nocturno Culto and Fenriz, who have sought to remain outside the music mainstream. Since 2006, their work has strayed from the traditional black metal style and incorporated more elements of traditional heavy metal, speed metal and punk rock, being likened to Motörhead.
Document 6: Arch Enemy discography: The following is a comprehensive discography of Arch Enemy, a Swedish melodic death metal band that formed in 1996. Its members were in bands such as Carcass, Armageddon, Carnage, Mercyful Fate, Spiritual Beggars, and Eucharist. It was founded by Carcass guitarist Michael Amott along with Johan Liiva, who were both originally from the influential death metal band Carnage. The band has released ten studio albums, three live albums, three video albums and three EPs. The band was originally fronted by Johan Liiva, who was replaced by German Angela Gossow as lead vocalist in 2000. Gossow left the band in March 2014 and was replaced by Canadian Alissa White-Gluz, while remaining as the group's manager.
Document 7: Mortem: Mortem is a death metal band formed in 1986 in Lima, Peru. They are the first Peruvian metal band to have toured Europe and the United States. Mortem’s musical style is firmly rooted in the death metal, black metal and thrash metal of the nineteen-eighties. Mortem's characteristic heavy sound is defined through slow and sinister death metal alternated with fast and aggressive counterparts. Frantic tremolo picking in the style of early Possessed and Death built on passionate rhythmic percussion topped with wailing atonal and melodic guitar solos comprise a potent mix which lives up to the principle of death metal technique to craft pounding ritualistic and spirited death metal. Vocals are forged from guttural rasps and often develop into high shrieks while lyrics deal mainly with the occult and anti-Christianity.
Document 8: Opeth: Opeth is a Swedish heavy metal band from Stockholm, formed in 1989. The group has been through several personnel changes, but lead vocalist, guitarist and songwriter Mikael Åkerfeldt has remained Opeth's primary driving force throughout the years. Opeth has consistently incorporated progressive, folk, blues, classical and jazz influences into its usually lengthy compositions, as well as strong influences from death metal, especially in their early works. Many songs include acoustic guitar passages and strong dynamic shifts, as well as both death growls and clean vocals. Opeth is also well known for their incorporation of Mellotrons in their work. Opeth rarely made live appearances supporting their first four albums; but since conducting their first world tour after the 2001 release of "Blackwater Park", they have led several major world tours.
Document 9: At the Gates: At the Gates is a Swedish melodic death metal band from Gothenburg, Sweden. They are a major progenitor of the Gothenburg sound. At the Gates were initially active from 1990 to 1996. In 2007, the band announced a limited reunion tour between April and September 2008. However, they reformed for a second time in 2011, and have since continued to perform live. The band released "At War with Reality", their first album in 19 years, in late 2014.
Document 10: In Flames: In Flames is a Swedish heavy metal band, which was formed by guitarist Jesper Strömblad in 1990 in Gothenburg, Sweden. Along with the bands At the Gates and Dark Tranquillity, In Flames was originally a metal band responsible for developing the genre now known as melodic death metal.
Document 11: Entombed (band): Entombed is a Swedish death metal band formed in 1987 under the name of Nihilist. Entombed began their career as an early pioneer of Scandinavian death metal which initially differed from its American counterpart by its distinct "buzzsaw" guitar tone. However, by the early 1990s their sound had broadened to include garage rock and other influences. This new style would eventually be described as death 'n' roll. Entombed have been influenced by bands such as Slayer, Black Sabbath, Celtic Frost, Autopsy, Repulsion, Kiss, The Misfits, Motörhead and Discharge. Along with Dismember, Grave and Unleashed, Entombed has been referred to as one of the "big four" of Swedish death metal.
Document 12: Melodic death metal: Melodic death metal (also referred to as melodeath) is a subgenre of death metal that employs highly melodic guitar riffs, often borrowing from traditional heavy metal. The style originated and developed in Sweden (pioneered by At the Gates, Dark Tranquillity and In Flames) and the United Kingdom (pioneered by Carcass) during the early and mid-1990s. The Swedish death metal scene did much to popularise the style, soon centring in the "Gothenburg metal" scene.
Document 13: List of songs recorded by Dream Theater: This is a complete list of songs by American progressive metal band Dream Theater. Dream Theater was formed in 1985 by guitarist John Petrucci, bassist John Myung, and drummer Mike Portnoy. The band's current line-up consists of Petrucci, Myung, keyboardist Jordan Rudess, vocalist James LaBrie, and drummer Mike Mangini. As of 2016, Dream Theater has released thirteen studio albums.
Document 14: Death metal: Death metal is an extreme subgenre of heavy metal music. It typically employs heavily distorted and low-tuned guitars, played with techniques such as palm muting and tremolo picking, deep growling vocals, aggressive, powerful drumming featuring double kick or blast beat techniques, minor keys or atonality, abrupt tempo, key, and time signature changes and chromatic chord progressions. The lyrical themes of death metal may invoke slasher film-stylized violence, religion (sometimes Satanism), occultism, Lovecraftian horror, nature, mysticism, mythology, philosophy, science fiction, and politics, and they may describe extreme acts, including mutilation, dissection, torture, rape, cannibalism, and necrophilia.
Document 15: Swedish death metal: Swedish death metal is a death metal music scene developed in Sweden. Many Swedish death metal bands are associated with the melodic death metal movement, thus giving Swedish death metal a different sound from other variations of death metal. Unlike American death metal groups, the first Swedish bands were rooted in punk rock. Although Norway is known for its quantity of black metal, Gothenburg in Sweden has a large melodic death metal scene, while Stockholm is known for its more raw death metal scene.
ground_truth: Septic Broiler