Question: Florence Leontine Mary Welch was born in Camberwell, London on 28 August 1986. Her father is Nick Russell Welch, an advertising executive. Her mother, Evelyn Welch (nee Evelyn Kathleen Samuels), is an American emigrant from New York City who was educated at Harvard University and the Warburg Institute, University of London. Evelyn is currently Professor of Renaissance Studies and Vice-Principal for Arts and Sciences at King's College London.

According to Welch, the band name "Florence + the Machine" had "started off as a private joke that got out of hand. I made music with my friend, who we called Isabella Machine, to which I was Florence Robot. When I was about an hour away from my first gig, I still didn't have a name, so I thought 'Okay, I'll be Florence Robot/Isa Machine', before realising that name was so long it'd drive me mad". In 2006, Welch's performances with Isabella Summers in small London venues under the joint name Florence Robot/Isa Machine began to attract notice. In 2007, Welch recorded with a band named Ashok, who released an album titled Plans on the Filthy Lucre/About Records label. This album included the earliest version of her later hit "Kiss with a Fist", which at this point was titled "Happy Slap". Florence and the Machine released their debut album Lungs in the United Kingdom on 6 July 2009. The album was officially launched with a set at the Rivoli Ballroom in Brockley, South East London. It peaked at number one in the UK and number two in Ireland. As of 6 August 2009, the album had sold over 100,000 copies in the UK and by 10 August it had been at number two for five consecutive weeks. Following its 25 July 2009 release for download in the United States, the album debuted at number seventeen on the Billboard Heatseekers Albums chart, ultimately peaking at number one. The album was released physically in the US on 20 October by Universal Republic. The album was produced by James Ford, Paul Epworth, Steve Mackey and Charlie Hugall. Welch contributed vocals to David Byrne and Fatboy Slim's 2010 album Here Lies Love, an album about Imelda Marcos. As of January 2011, Welch was working with Drake on material slated for his upcoming album. On 27 February 2011, Welch replaced pregnant Dido and sang her portion of Best Original Song nominee "If I Rise" (from 127 Hours) with A. R. Rahman at the 83rd Academy Awards.

Using a quote from the above article, answer the following question: When did florence and the machine form?
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Answer: In 2006, Welch's performances with Isabella Summers in small London venues under the joint name Florence Robot/Isa Machine began to attract notice.

Question: The Nitty Gritty Dirt Band, an American country rock band, has existed in various forms since its founding in Long Beach, California in 1966. The group's membership has had at least a dozen changes over the years, including a period from 1976 to 1981 when the band performed and recorded as the Dirt Band. Constant members since the early times are singer-guitarist Jeff Hanna and drummer Jimmie Fadden. Multi-instrumentalist John McEuen was with the band from 1966 to 1986 and returned during 2001 departing once again in November 2017.

The Nitty Gritty Dirt Band was founded around 1966 in Long Beach, California by singer-guitarist Jeff Hanna and singer-songwriter guitarist Bruce Kunkel who had performed as the New Coast Two and later the Illegitimate Jug Band. Trying, in the words of the band's website, to "figure out how not to have to work for a living," Hanna and Kunkel joined informal jam sessions at McCabe's Guitar Shop in Long Beach. There they met a few other musicians: guitarist/washtub bassist Ralph Barr, guitarist-clarinetist Les Thompson, harmonicist and jug player Jimmie Fadden, and guitarist-vocalist Jackson Browne. As Nitty Gritty Dirt Band, the six men started as a jug band and adopted the burgeoning southern California folk rock musical style, playing in local clubs while wearing pinstripe suits and cowboy boots. Their first paying performance was at the Golden Bear in Huntington Beach, California. Browne was in the band for only a few months before he left to concentrate on a solo career as a singer-songwriter. He was replaced by John McEuen on banjo, fiddle, mandolin, and steel guitar. McEuen's older brother, William, was the group's manager, and he helped the band get signed with Liberty Records, which released the group's debut album, The Nitty Gritty Dirt Band during 1967. The band's first single, "Buy for Me the Rain," was a Top 40 success, and the band gained exposure on The Tonight Show Starring Johnny Carson, as well as concerts with such disparate artists as Jack Benny and The Doors. A second album, Ricochet, was released later during the year and was less successful than their first. Kunkel wanted the band to "go electric", and include more original material. Bruce left the group to form WordSalad and Of The People. He was replaced by multi-instrumentalist Chris Darrow. By 1968, the band adopted electrical instruments anyway, and added drums. The first electric album, Rare Junk, was a commercial failure, as was their next, Alive. The band continued to gain publicity, mainly as a novelty act, making an appearance in the 1968 film, For Singles Only, and a cameo appearance in the 1969 musical western film, Paint Your Wagon, performing "Hand Me Down That Can o' Beans". The band also played Carnegie Hall as an opening act for Bill Cosby and played in a jam session with Dizzy Gillespie.

Using a quote from the above article, answer the following question: DId they experience any other significant changes in the band during this period?
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Answer:
He was replaced by John McEuen on banjo, fiddle, mandolin, and steel guitar.