Question: What year saw the formation of the musical ensemble that performed Mulher na Montanha?

full_context: Document 1: Seventh Brings Return: A Tribute to Syd Barrett: Seventh Brings Return: A Tribute to Syd Barrett is a live video by Brazilian psychedelic rock band Violeta de Outono, released by Voiceprint Records in 2009. It was recorded during a show at the Teatro Popular do SESI on July 17, 2006, in which they covered numerous Pink Floyd songs as a tribute to their former lead vocalist and founding member Syd Barrett, as well as a song of his 1970 solo album "The Madcap Laughs".
Document 2: Em Toda Parte: Em Toda Parte (Portuguese for "All Around") is the second studio album by Brazilian psychedelic rock band Violeta de Outono, released in June 18, 1989 by Ariola Records. It was also their last release before they entered a hiatus period in 1993 that would last until 1995. Beginning with this album, Violeta de Outono abandons their post-punk influences and gradually shift towards a more progressive-influenced sonority.
Document 3: Live at Rio ArtRock Festival '97: Live at Rio ArtRock Festival '97 is a live album by Brazilian psychedelic rock band Violeta de Outono, released on May 9, 2000 by Rock Symphony. It was recorded during the band's performance at the in Rio de Janeiro, in 1997.
Document 4: Eclipse (Violeta de Outono album): Eclipse is a live album by Brazilian psychedelic rock band Violeta de Outono, released in 1995 by Argentine independent label Record Runner. It was recorded during the band's performance at the SESC Pompeia in São Paulo, in 1986.
Document 5: Mulher na Montanha: Mulher na Montanha (Portuguese for "Woman on the Mountain") is the third studio album by Brazilian psychedelic rock band Violeta de Outono. The band began work on the album in 1995, but it wouldn't be released until September 27, 1999 by Voiceprint Records, being their first of many albums to be so. It was also their first album of new material since 1989's "Em Toda Parte".
Document 6: Ao Vivo no Theatro Municipal: Violeta de Outono – Ao Vivo no Theatro Municipal, São Paulo, 03.05.2009 is a live video by Brazilian psychedelic rock band Violeta de Outono, released by Voiceprint Records on July 25, 2011. As the name implies, it was recorded during a show at the Theatro Municipal in São Paulo on May 3, 2009, in which they performed their 1987 debut album in its entirety, as well as some other tracks.
Document 7: Ilhas (album): Ilhas (Portuguese for "Islands") is the fourth studio album by Brazilian psychedelic rock band Violeta de Outono, released on May 9, 2005 by Voiceprint Records. It was the last album of the band to feature the original line-up of Fabio Golfetti, Cláudio Souza and Angelo Pastorello.
Document 8: Vocolot: Vocolot began in 1988, when singer-songwriter Linda Hirschhorn informally assembled a group of musicians to record some of the songs she had written for four- and five-part vocal harmonies. When they had finished recording those, for the "Gather Round" album, she asked the singers to join her in an ongoing group. The founding members were Rosalind Glazer, Max Ventura, Tay Holden and Linda Hirschhorn.
Document 9: Out There (Eleanor McEvoy album): Out There is Eleanor McEvoy's sixth studio album. McEvoy, a multi-instrumentalist, produced and arranged "Out There", and played all instruments on the album and supplied all vocals. The album includes ten new compositions by McEvoy plus two co-writes with the Beautiful South's Dave Rotheray. On track 5, "Vigeland's Dream", McEvoy eloquently describes a walk she once took in Vigeland Sculpture Park which is a part of Frogner Park (Frognerparken), a public park located in the borough of Frogner, in Oslo, Norway. The album also includes an updated version of Marvin Gaye's classic "Mercy Mercy Me (The Ecology)" as well as a new version of Lowell George's "Roll Um Easy."
Document 10: Reflexos da Noite: Reflexos da Noite (Portuguese for "Reflections of the Night") is an EP, and the first official release by the Brazilian psychedelic rock band Violeta de Outono. It came out in September 12, 1986 by now-defunct independent label Wop-Bop Records.
Document 11: Three Days Grace: The band began recording their fifth studio album, Outsider, in July 2017, releasing ``The Mountain ''as the first single on January 25, 2018 with an accompanying music video. The song peaked at No. 1 on the Billboard Mainstream Rock chart in March 2018 and became Three Days Grace's 13th No. 1 on the chart while tying the record with Van Halen. The album was released on March 9, 2018.
Document 12: Mountain Sounds: Mountain Sounds is a joint recording project composed of Tim Hoyt and Franc Castillejos, citizens of the United States and Guatemala respectively. The pair originally met and began playing together in Florida where Castillejos had moved for school, but reconnected several years later after he returned to Guatemala and Hoyt moved to Portland, Oregon. Their debut album was self-produced in an unused orphanage originally built by Castillejos' parents in the Cerro Alux Mountains outside of Guatemala City. It was mixed by Matt Wilbur of The Vanguard Room and mastered by Troy Glessner. The first track from the album, "Lion or the Bee", was premiered by Rolling Stone as a Daily Download, and the full album was made available by Beats Per Minute as a free stream in advance of its official release date of March 26, 2013.
Document 13: Mother (Luna Sea song): "Mother" is the fifth single by Japanese rock band Luna Sea, released on February 22, 1995. The song reached number 5 on the Oricon singles chart. This version of "Mother" is slightly different from the album's. The B-side is a live version of "Déjàvu" recorded on December 27, 1994 at the Nippon Budokan.
Document 14: In the Mountain in the Cloud: In the Mountain in the Cloud is the sixth studio album by Alaskan psychedelic rock band Portugal. The Man. It was recorded over a period of eight months, and produced by John Hill, the band's frontman John Gourley, and Casey Bates. The album was released on July 19, 2011 through Atlantic Records and is Portugal. The Man's major-label debut.
Document 15: Violeta de Outono: Fabio Golfetti founded Violeta de Outono in 1985 alongside Cláudio Souza; both had just parted ways with pioneering New Romantic band Zero. They would later be joined by Angelo Pastorello, and with this line-up they released a demo tape, "Memories", in the same year. The tape got the attention of independent record label Wop-Bop Records, that released their first recording, the extended play "Reflexos da Noite", in 1986.
ground_truth: 1985
sub_queries: Mulher na Montanha >> performer Answer: Violeta de Outono
In what year did Violeta de Outono first exist? Answer: 1985