Question: When was the band that performs Sing Blue Silver established?

full_context: Document 1: Elton John: Tantrums & Tiaras: Tantrums & Tiaras is a 1997 documentary film about the musician Sir Elton John, directed by his husband, David Furnish. It was recorded during John's Made in England Tour in 1995 and includes parts of interviews and concerts. Included in the documentary is a large part of a concert John performed in Rio de Janeiro, Brazil in November 1995. In 1998, the documentary won a Chris Award at the Columbus Film and Video Festival. It was also re-released on DVD in November 2008 as a "Director's Cut" with extra material.
Document 2: Second British Invasion: During the Second British Invasion, established British acts such as Queen, David Bowie, Paul McCartney, Phil Collins, Rod Stewart and Elton John saw their popularity increase; a few acts that dated to the era of the original British Invasion, including George Harrison, Eddy Grant, The Hollies and The Moody Blues, had their last major hits in this time frame. Counting his work with Genesis, Collins had more top 40 hits on the Billboard Hot 100 chart during the 1980s than any other artist.
Document 3: Dancing in the Dark (Bruce Springsteen song): Directed by Brian De Palma, the video was shot at the Saint Paul Civic Center in Saint Paul, Minnesota, on June 28 and 29, 1984. The first night was a pure video shot, the second was on the opening date of the Born in the U.S.A. Tour. Bruce Springsteen and the E Street Band performed the song twice during that show to allow Brian De Palma to get all the footage he needed. The video is a straight performance video, with Springsteen not playing a guitar, allowing him to invite a young woman from the audience, performed by Courteney Cox, to dance along with him on the stage at the end. In September 1985, the video won the MTV Video Music Award for Best Stage Performance.
Document 4: Visions in Blue: "Visions in Blue" is Ultravox's third single from the "Quartet" album, recorded in Air Studios, London and released on Chrysalis Records on 11 March 1983. The single peaked at #15 in the UK charts on 26 March. A video was produced, but was banned by the BBC and MTV due to brief nudity; an edited version was later provided for broadcast on "Top of the Pops".
Document 5: Live from London (Duran Duran): Live from London is a concert film by the British group, Duran Duran. It was filmed during the course of the last two of five sold-out nights at Wembley Arena in April 2004, during the band's first global tour after the reunion of the band's original five members.
Document 6: Sing Blue Silver: Sing Blue Silver is a documentary about Duran Duran's 1983-1984 World Tour directed by Michael Collins. A sixty-minute edited version of the documentary was aired on MTV (and later other music channels) under the title Blue Silver.
Document 7: List of UK Singles Chart number ones of the 1980s: American entertainer Madonna was the most successful act of the decade in terms of number - one singles. She had six number ones: ``Into the Groove ''(1985);`` Papa Do n't Preach'', ``True Blue ''(both 1986);`` La Isla Bonita'', ``Who's That Girl ''(both 1987); and`` Like a Prayer'' (1989). George Michael had significant involvement with seven number - one singles; he was also involved with Band Aid single ``Do They Know It's Christmas? ''but his contribution was less significant. He had two number - one singles as a solo artist, four as a member of pop duo Wham!, and one as a duet with Aretha Franklin. The following artists achieved three or more number - one hits during the 1980s.
Document 8: Post-punk: The original post-punk movement ended as the bands associated with the movement turned away from its aesthetics, often in favor of more commercial sounds. Many of these groups would continue recording as part of the new pop movement, with entryism becoming a popular concept. In the United States, driven by MTV and modern rock radio stations, a number of post-punk acts had an influence on or became part of the Second British Invasion of "New Music" there. Some shifted to a more commercial new wave sound (such as Gang of Four), while others were fixtures on American college radio and became early examples of alternative rock. Perhaps the most successful band to emerge from post-punk was U2, who combined elements of religious imagery together with political commentary into their often anthemic music.
Document 9: From the Sky Down: From the Sky Down is a 2011 American documentary film directed by Davis Guggenheim about rock band U2 and the production of their 1991 album "Achtung Baby". The film documents the album's difficult recording period, the band members' relationships, and the group's creative process. Guggenheim, who was commissioned by U2 to create the film to commemorate the record's 20th anniversary, spent several months in 2011 developing the documentary. The band were filmed during a return visit to Hansa Studios in Berlin where parts of the album were recorded, and during rehearsals in Winnipeg for the Glastonbury Festival 2011. The film contains unreleased scenes from the group's 1988 motion picture "Rattle and Hum", along with archival footage and stills from the "Achtung Baby" recording sessions. Development of the album's emblematic song "One" is recounted through the replaying of old recording tapes.
Document 10: Hard rock: Established bands made something of a comeback in the mid-1980s. After an 8-year separation, Deep Purple returned with the classic Machine Head line-up to produce Perfect Strangers (1984), which reached number five in the UK, hit the top five in five other countries, and was a platinum-seller in the US. After somewhat slower sales of its fourth album, Fair Warning, Van Halen rebounded with the Top 3 album Diver Down in 1982, then reached their commercial pinnacle with 1984. It reached number two on the Billboard album chart and provided the track "Jump", which reached number one on the singles chart and remained there for several weeks. Heart, after floundering during the first half of the decade, made a comeback with their eponymous ninth studio album which hit number one and contained four Top 10 singles including their first number one hit. The new medium of video channels was used with considerable success by bands formed in previous decades. Among the first were ZZ Top, who mixed hard blues rock with new wave music to produce a series of highly successful singles, beginning with "Gimme All Your Lovin'" (1983), which helped their albums Eliminator (1983) and Afterburner (1985) achieve diamond and multi-platinum status respectively. Others found renewed success in the singles charts with power ballads, including REO Speedwagon with "Keep on Loving You" (1980) and "Can't Fight This Feeling" (1984), Journey with "Don't Stop Believin'" (1981) and "Open Arms" (1982), Foreigner's "I Want to Know What Love Is", Scorpions' "Still Loving You" (both from 1984), Heart’s "What About Love" (1985) and "These Dreams" (1986), and Boston's "Amanda" (1986).
Document 11: Hard rock: Bon Jovi's third album, Slippery When Wet (1986), mixed hard rock with a pop sensitivity and spent a total of 8 weeks at the top of the Billboard 200 album chart, selling 12 million copies in the US while becoming the first hard rock album to spawn three top 10 singles — two of which reached number one. The album has been credited with widening the audiences for the genre, particularly by appealing to women as well as the traditional male dominated audience, and opening the door to MTV and commercial success for other bands at the end of the decade. The anthemic The Final Countdown (1986) by Swedish group Europe was an international hit, reaching number eight on the US charts while hitting the top 10 in nine other countries. This era also saw more glam-infused American hard rock bands come to the forefront, with both Poison and Cinderella releasing their multi-platinum début albums in 1986. Van Halen released 5150 (1986), their first album with Sammy Hagar on lead vocals, which was number one in the US for three weeks and sold over 6 million copies. By the second half of the decade, hard rock had become the most reliable form of commercial popular music in the United States.
Document 12: Post-punk: Artists such as Gary Numan, the Human League, Soft Cell, John Foxx and Visage helped pioneer a new synthpop style that drew more heavily from electronic and synthesizer music and benefited from the rise of MTV. Post-punk artists such as Scritti Politti's Green Gartside and Josef K's Paul Haig, previously engaged in avant-garde practices, turned away from these approaches and pursued mainstream styles and commercial success. These new developments, in which post-punk artists attempted to bring subversive ideas into the pop mainstream, began to be categorized under the marketing term new pop.
Document 13: Duran Duran: Duran Duran () are an English new wave band formed in Birmingham in 1978. The band were one of the most successful acts of the 1980s, but by the end of the decade, membership and music style changes challenged the band before a resurgence in the early 1990s. The group were a leading band in the MTV-driven Second British Invasion of the US in the 1980s. They achieved 14 singles in the top 10 of the UK Singles Chart and 21 in the US "Billboard" Hot 100, and have sold over 100 million records worldwide.
Document 14: Seven and the Ragged Tiger: Seven and the Ragged Tiger is the third studio album by English new wave band Duran Duran. It was released on 21 November 1983 by EMI. It was the band's first and only number one album on the UK Albums Chart, and would prove to be the last studio album for the band's most famous line-up until 2004's "Astronaut".
Document 15: Ride, Rise, Roar: Comparisons with the 1984 Talking Heads documentary "Stop Making Sense" were inevitable—"The Seattle Times" even dubbed this a "sequel"—and reviews universally found the former film to be stronger. For instance, View London considers "Ride, Rise, Roar" entertaining, but "not on the level of classica rockumentaries", whereas "Stop Making Sense" is "generally reckoned to be one of the best concert movies ever made." "Time Out Chicago"s assessment of Hillman Curtis acknowledges the "challenging position" that he was in by being compared to Jonathan Demme's direction, but sums up the review by calling the film "a very satisfying experience."
ground_truth: 1978
sub_queries: Sing Blue Silver >> performer Answer: Duran Duran
When was Duran Duran established? Answer: 1978