Question: In 1998, Which member left the group that released the album "Nature's Symphony in 432"?

full_context: Document 1: Bill Caswell: Bill Caswell is a country music singer-songwriter and musician active since the early 1980s. Together with his wife Rosi Caswell, the duo from Bartlesville, Oklahoma perform on rare old style instruments including the ukelin, mandolin-guitar, bell-harp, and tremeloa. In the 1980s he performed his music on television in "Hee Haw" and on live radio in "A Prairie Home Companion". The two together performed at Dollywood in Gatlinburg, Tennessee for five seasons.
Document 2: Kol Shira: Kol Shira is an all-woman music group whose performances fuse world music with their Jewish heritage. Based in Iowa City, Iowa, Kol Shira can often be found performing in festivals and community events. The group, whose name translates from the Hebrew as "Voice of Song," features a mix of vocals, flute, guitar, piano, bass guitar, cello and hand-held percussion. Jim Musser, music reviewer for the Iowa City Press Citizen, describes the band as “exquisite” and “wondrous.” At the end of 2004, Mr. Musser ranked Kol Shira’s CD, “Voice of Song,” as one of the top six independent releases from the Eastern Iowa area.
Document 3: Symphony (Clean Bandit song): "Symphony" is a song by British classical crossover band Clean Bandit featuring Swedish singer Zara Larsson. It is taken as the third single from their upcoming second album. The song was also released as the sixth single from Larsson's second studio album, "So Good" (2017). The song is the final track on the album. The song peaked at number one on the Swedish singles chart, becoming Larsson's fifth number one in her home country. It has also reached number one in Norway and the United Kingdom, becoming Larsson's first number one single in the latter country, as well as Clean Bandit's third number one in the UK.
Document 4: Isabel Granada: Isabel Granada is a famous singer, actress, pilot and athlete. She was born on 3 March 1976. She married her spouse Jericho Aguas in 2002 and eventually separated. In 2015, she married Arnel Cowley. She has 2 step "children" Sarah Cowley, Abbey Cowley and her own son Hurbert Aguas. She is well known for her role as a Filipino and Spanish actress and singer. To this day she is still doing big roles in singing and acting
Document 5: Carter Family: The Carter Family is a traditional American folk music group that recorded between 1927 and 1956. Their music had a profound impact on bluegrass, country, Southern Gospel, pop and rock musicians as well as on the U.S. folk revival of the 1960s. They were the first vocal group to become country music stars. Their recordings of songs such as "Wabash Cannonball", "Can the Circle Be Unbroken", "Wildwood Flower", "Keep On the Sunny Side" and "I'm Thinking Tonight of My Blue Eyes" made these songs country standards. The latter's tune was used for Roy Acuff's "The Great Speckled Bird", Hank Thompson's "The Wild Side of Life" and Kitty Wells' "It Wasn't God Who Made Honky Tonk Angels", making the song a hit all over again in other incarnations.
Document 6: Grammy Award for Best American Roots Song: The Grammy Award for Best American Roots Song is a new award category at the annual Grammy Awards, a ceremony that was established in 1958 and originally called the Gramophone Awards, to recording artists for quality songs in the American Roots Music genres such as blues, bluegrass, folk, Americana and regional roots music. Honors in several categories are presented at the ceremony annually by the National Academy of Recording Arts and Sciences of the United States to "honor artistic achievement, technical proficiency and overall excellence in the recording industry, without regard to album sales or chart position".
Document 7: Náttúra: "Náttúra" is a song written and recorded by Icelandic singer Björk. The track was released as a single promoting the protection of the Icelandic environment. All proceeds from the single will be donated to the Náttúra Foundation, the environmental preservation campaign after which the song is named. The single was initially discovered by Björk's French language fan website and was later confirmed by the singer's representatives. It was released on October 20, 2008 as an iTunes Exclusive, and had a wide digital release on October 27. The song was given a physical release on April 20, 2009 with a white label vinyl released by One Little Indian's web shop. The single was included on the deluxe version of Björk's 2011 album Biophilia.
Document 8: Nature's Symphony in 432: Nature's Symphony in 432 is an album by The Isaacs. It earned the group a Grammy Award nomination for Best Roots Gospel Album.
Document 9: Lonesome Pine Fiddlers: The Lonesome Pine Fiddlers (1938- 1966) were an early bluegrass band which included such notable "first generation" bluegrass musicians as Ezra Cline, Bobby Osborne, Paul Williams, Melvin Goins, Charlie Cline, Curly Ray Cline, Larry Richardson and for a short time Jimmy Martin. The group was started by Ezra Cline and Curly Ray Cline and was originally named "Cousin Ezra and the Lonesome Pine Fiddlers". The Clines came from a large family consisting of musically talented people. Ray and Charlie's father, Charlie, was a talented banjo player and the women in the family, Geraldine and Bobbi, were great singers. For reasons unknown, Bobbi and Geraldine never joined the band on the road but often joined in at home, especially when notable Country singers, such as Bill Monroe, Lester Flatt and Earl Scruggs, and Hank Williams, came visiting. None of them ever had a music lesson yet excelled on every instrument they touched. Natives of the Gilbert Creek region of southern West Virginia, Cousin Ezra, along with brothers Ireland (Lazy Ned) and Curly Ray Cline, were part of the original Lonesome Pine Fiddlers from about 1938, a group that worked on radio at WHIS Bluefield, West Virginia. During World War II, Ned was killed in action. When the Pine Fiddlers resumed regular daily broadcasts, Charlie, who played multiple instruments, joined them on a regular basis. Charlie returned to the Fiddlers briefly before becoming a member of Bill Monroe's Blue Grass Boys. During 1952-1955, Charlie worked off and on with Monroe, recording some 38 songs, all on Decca. It has been said that he played every instrument at one time or another in the Monroe group except mandolin. Charlie spent most of 1953 back with the Lonesome Pine Fiddlers working at WJR radio in Detroit. When Ezra brought the band to Pikeville, Kentucky, in November, Charlie rejoined Bill Monroe. In 1954, Charlie did a session, playing lead guitar, with the Stanley Brothers and also another one on RCA with the Fiddlers, although he was not otherwise working with them at the time. He also worked briefly as a sideman with the Osborne Brothers, although he did not record with them. By 1958, Charlie (electric lead guitar) and his wife, Lee (electric bass), had rejoined Ezra and Curly Ray in the Lonesome Pine Fiddlers, who were experimenting with a more modern sound and working a TV show in Huntington, West Virginia, in addition to daily radio in Pikeville. In his later years, Charlie was with the Stanley Brothers. Curly Ray also played with the Stanley Brothers at a different time as their fiddler. Curly Ray was one of the best fiddlers in Bluegrass. This most talented family of musicians were the best, surpassed by none. Finally, on October 1, 2009, The Lonesome Pine Fiddlers got their due when they were inducted into the International Bluegrass Hall of Fame at the Ryman Theater (the original home of the Grand Ole Opry). Bobby Osborne, Melvin Goins and Paul Williams were there to receive the bands award. In the crowd of a sold out theater was the son of Ezra Cline, Scotty Ireland Cline, who recalled being in that same theater as a child sitting on stage and watching the Fiddlers play. (At the time, the Opry had bleachers for family just off stage). The final act of the evening at the IBMA Awards was the playing of "Pain in my Heart" by Osborne, Goins and Williams along with a Song from the Dillards, who were also inducted the same evening.
Document 10: Jag Star: 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.
Document 11: Isa (album): Isa is the eighth full-length studio album by Norwegian metal band Enslaved. Several tracks segue continuously into one another and the majority of compositions are composed of multiple interlocking movements.
Document 12: The McLain Family Band: The McLain Family Band is a bluegrass group that was active in the 1970s and 1980s and still occasionally performs today. Formed in 1968, the band consisted of father Raymond K. McLain (1928-2003) on guitar, son Raymond W. McLain (b.1953) on banjo, fiddle, mandolin, vocals, and guitar, Alice McLain (b.1956) on vocals and mandolin, and Ruth McLain (b. 1958) on bass, vocals, and mandolin. In later years Nancy Ann McLain (b.1965) and Michael McLain (b.1967) joined the group, playing bass and guitar respectively. Alice's husband, Al White (b.1952), joined the band in 1977, and played guitar and mandolin, as well as contributing vocals.
Document 13: 9Bach: 9Bach is an alternative folk group formed by Welsh singer-songwriter and pianist Lisa Jên and guitarist Martin Hoyland, a veteran of 1990s alt-rock band Pusherman. The group now includes Ali Byworth (drums and percussion), Dan Swain (bass guitar), Esyllt Glyn Jones (harp, vocals), and Mirain Roberts (vocals). The sextet's name puns on "nain", the word for "grandmother" in north Wales; "bach" means "small" in Welsh.
Document 14: Nature Ganganbaigal: Nature Ganganbaigal is a music performer, songwriter, producer and film music composer based in New York City. Originated from Beijing, he is of mixed Chinese and partial Mongol ancestry, and performs Mongolian Morin Khuur and throat singing. He appeared on the stage of Lincoln Center and held a sold-out concert at Carnegie Hall with Tengger Cavalry in 2015. Graduated from New York University in 2015, he held a master of music degree in film music composition.
Document 15: The Isaacs: The Isaacs are a country and bluegrass gospel music group consisting of mother Lily Isaacs, and daughters Becky and Sonya Isaacs and son Ben Isaacs, along with John Bowman (husband of Becky Isaacs) as an instrumentalist and songwriter. Joe Isaacs, formerly a singer and banjo player in the group, has left since his 1998 divorce from Lily Isaacs. He now does solo work on a far more localized level.
ground_truth: Joe Isaacs