Context_1 : Mayhem is a Norwegian black metal band formed in 1984 in Oslo. They were one of the founders of the Norwegian black metal scene and their music has strongly influenced the black metal genre. Mayhem's early career was highly controversial, primarily due to their notorious live performances, the 1991 suicide of vocalist Per Yngve Ohlin ("Dead") and the 1993 murder of guitarist Øystein Aarseth ("Euronymous") by former member Varg Vikernes ("Count Grishnackh"), of Burzum. Context_2 : Lars Göran Petrov (born 17 February 1972), often abbreviated to LG Petrov, is a Swedish singer of Macedonian origin. He is best known for his work with the band Entombed. In 1991 he was forced to quit Entombed, due to Petrov "making an ill-advised pass" at the girlfriend of Entombed drummer Nicke Andersson. He contributed the vocals for fellow Swedish death metal band Comecon's debut album "Megatrends in Brutality". In 1992, he returned to Entombed. He also played drums in Morbid, which featured Mayhem vocalist Per Yngve "Dead" Ohlin in its original line up. Context_3 : The Survivors were a Brisbane punk rock band that originally formed in 1976 as Rat Salad, a party band, The Survivors attained cult status in Australia by their acknowledged popular live performances and contribution to the "Lethal Weapons" punk compilation album. Original band members were Greg Williamson on guitar and vocals, Jim Dickson on bass guitar and vocals, Bruce Anthon on drums and vocals. David Nichols, from the "Mess And Noise" website, commented that, "The Survivors were legends in their home town of Brisbane, a highly popular and adept band whose sets were mainly cool ’60s covers." Context_4 : Illud Divinum Insanus is the eighth studio album by American death metal band Morbid Angel. It was released on June 7, 2011, by independent French record label Season of Mist. It is Morbid Angel's first album since "Heretic" (2003), the band's longest gap to date between studio albums. This is the only Morbid Angel album to feature guitarist Destructhor and drummer Tim Yeung, making it their first not to feature Pete Sandoval, who was recovering from surgery. It is also the band's only album to feature bassist/vocalist David Vincent since he rejoined in 2004. Context_5 : Jag Star (just a girl singing to a radio) is an alternative rock/pop band from Knoxville, Tennessee. Originally formed in late 1998, the band has released four independent records, and have a number of singles on a compilation album. The band has seen several line up changes and has toured extensivley since 2000. Of the original line up listed on the band’s first EP “The Beginning”, only Sarah and J Lewis remain. Erin (Tipton) Archer, violist, was an original member but left the band in 2003 shortly after she married. The current line up includes Sarah Lewis (lead vocals, songwriter, keys), Brad Williams (drums), Just J (guitar), Drew Gilch (Bass) and Jay Daniel (Bass). Although listed as a current member, Jay Daniel has not performed with the band in recent months. Sarah is a signed songwriter to a publishing company and has had many songs featured all over television, including NBC, ABC Family, FOX, Lifetime, Disney, MTV, A & E, Travel, etc. The band is currently (as of April 2009) in the studio finishing up album number five. Context_6 : The Angie Pepper Band was a band formed in Sydney, Australia, which centralised around the artist Angie Pepper. Angie Pepper first came to notice as vocalist for the post punk independent Sydney band the Passengers, who produced one single ("Face With No Name") on the Phantom label. She married Radio Birdman co-founder Deniz Tek, and they played together in the short lived Angie Pepper Band whose ranks included a future Hoodoo Guru in Clyde Bramley and a former Saints drummer in Ivor Hay. Context_7 : A ghost band is, in the case of big band jazz, a band that performs under the original name of a deceased leader. In the case of rock, under a relaxed definition, it is a band that performs under the name of the original band whose founders are either deceased or have left the band. Use of the phrase may refer to a repertory jazz ensemble, such as a Dixieland band, with a longstanding, historic name. But in the strictest sense, a ghost band is connected in some way to a deceased leader. Context_8 : Halfway to Gone is an American heavy metal band from New Jersey. The band formed in 1999 when bassist and founding member of Solarized, Lou Gorra got together with Lee Stuart (Solarized's touring guitarist), and drummer Danny Gollin. Chuck Dukehart from Sixty Watt Shaman played drums in the band for a year before being replaced by Kenny Wagner, also of Sixty Watt Shaman & Honky, who toured with them and played on "Second Season". The band did U.S. tours & played shows with Clutch, Nashville Pussy, Nebula, CKY, Suplecs, and many others. The band's style has been described as a mixture of Stoner rock, Southern rock and Heavy metal, inspired by Lynyrd Skynyrd and Black Sabbath, among others. They released an album with Alabama Thunderpussy in 2000 and their own debut early the next year. They have released two more albums since. They went on extended hiatus in 2004 but are rumored to be doing another album in 2012 with original line up of Stu, Danny, & Lou on Smallstone Records. Context_9 : A cover band (or covers band), is a band that plays mostly or exclusively cover songs. New or unknown bands often find the format marketable for smaller venues, such as pubs, clubs, or parks. The bands also perform at private events, for example, weddings and birthday parties and may be known as a wedding band, party band, function band or band-for-hire. A band whose covers consist mainly of songs that were chart hits is often called a top 40 band. Some bands, however, start as cover bands, then grow to perform original material. For example, The Rolling Stones released three albums consisting primarily of covers before recording one with their own original material. Context_10 : Adema is a nu metal band from Bakersfield, California. The band formed in 2000 with members lead vocalist Mark Chavez, vocalist/guitarist Tim Fluckey, guitarist Mike Ransom, bassist Dave DeRoo, and drummer Kris Kohls. After their first two albums, "Adema", and "Unstable", the band was plagued with years of conflict and lineup changes. Ransom left the band in 2003 due to conflicts with Chavez followed by Chavez later in 2004 due to conflicts with the rest of the band. Luke Caraccioli replaced Chavez in early 2005 for one album, "Planets", but then left a few months later in late 2005. Vocalist Bobby Reeves and guitarist Ed Farris, both from the band Level, were recruited to join as well, but only released one album, "Kill the Headlights" in 2007, before entering a hiatus. The band's original line up reformed in late 2009 and toured, but both Ransom and Chavez left again before any new music would be recorded. Fluckey took over lead vocals from 2011 to 2017. The lineup released an EP, "Topple the Giants." In 2013 Ransom returned once again; Chavez rejoined the band again in March 2017, solidifying the current line-up. fact_1 :  He also played drums in Morbid, which featured Mayhem vocalist Per Yngve "Dead" Ohlin in its original line up. fact_2 : Mayhem is a Norwegian black metal band formed in 1984 in Oslo. Answer: 1984
Output: In what year was the band whose vocalist was in the original line up of the band Morbid formed?