Question: What is the genre of the singer of The song Go Rest High on That Mountain?

full_context: Document 1: Round Here (Florida Georgia Line song): "Round Here" is a song recorded by American country music duo Florida Georgia Line. It was released in June 2013 as the third single from their album "Here's to the Good Times". It was written by Rodney Clawson, Chris Tompkins, and Thomas Rhett.
Document 2: Go Rest High on That Mountain: "Go Rest High on That Mountain" is a song written and recorded by American country music artist Vince Gill. It was released in August 1995 as the sixth single from his album "When Love Finds You". It is a eulogic ballad. Gill began writing the song following the death of country music superstar Keith Whitley, who died in 1989. Gill did not finish the song until a few years later following the death of his older brother Bob of a heart attack in 1993. Ricky Skaggs and Patty Loveless both sang background vocals on the record.
Document 3: 'Round Here: "'Round Here" is a song written by Mark Miller, Gregg Hubbard and Scotty Emerick, and recorded by American country music group Sawyer Brown. It was released in November 1995 as the second single from the album "This Thing Called Wantin' and Havin' It All". The song reached number 19 on the "Billboard" Hot Country Singles & Tracks chart. It also peaked at number 19 on the Canadian "RPM" Country Tracks chart.
Document 4: Mandolin: Jethro Burns, best known as half of the comedy duo Homer and Jethro, was also the first important jazz mandolinist. Tiny Moore popularized the mandolin in Western swing music. He initially played an 8-string Gibson but switched after 1952 to a 5-string solidbody electric instrument built by Paul Bigsby. Modern players David Grisman, Sam Bush, and Mike Marshall, among others, have worked since the early 1970s to demonstrate the mandolin's versatility for all styles of music. Chris Thile of California is a well-known player, and has accomplished many feats of traditional bluegrass, classical, contemporary pop and rock; the band Nickel Creek featured his playing in its blend of traditional and pop styles, and he now plays in his band Punch Brothers. Most commonly associated with bluegrass, mandolin has been used a lot in country music over the years. Some well-known players include Marty Stuart, Vince Gill, and Ricky Skaggs.
Document 5: It Ain't Nothin': "It Ain't Nothin'" is a song written by Tony Haselden, and recorded by American country music artist Keith Whitley. It was posthumously released in October 1989 as the second single from the album "I Wonder Do You Think of Me". His fifth and last No. 1 on the "Billboard" Hot Country Singles chart, the song was his second posthumous chart-topper, reaching the top of the chart seven months after his death.
Document 6: Here Today (David Grisman album): Here Today is a bluegrass album by five American musicians David Grisman, Emory Gordy Jr., Herb Pedersen, Jim Buchanan and Vince Gill, released in 1983 on Rounder Records. This was the only album this group recorded and each continued separate careers in bluegrass, newgrass, and country music.
Document 7: Here & Now (America album): Here & Now is the 16th original studio album by American folk rock duo America, released by Burgundy Records in January 2007 (see 2007 in music). This is the first pop music studio album released by the group since "Human Nature" in 1998 (the group released a Christmas-themed studio album in 2002, "Holiday Harmony"). This album was a modest hit when it was released in 2007, reaching 52 on the Billboard album chart; America's best chart showing since 1982's "View from the Ground".
Document 8: Cryin' for Me (Wayman's Song): The song is a mid-tempo country ballad, mostly accompanied by acoustic guitar and saxophone. It was written as a tribute to basketball player and jazz musician Wayman Tisdale, who died on May 15, 2009. In it, the narrator is crying, but states he is not crying for Tisdale's death, rather crying for himself.
Document 9: Old Man from the Mountain: "Old Man from the Mountain" is a song written and recorded by American country music artist Merle Haggard and The Strangers. It was released in June 1974 as the second single from the album "Merle Haggard Presents His 30th Album". It was Haggard and The Strangers eighteenth number one on the country singles chart. The single went to number one for a single week and spent a total of ten weeks on the chart.
Document 10: You Gave Me a Mountain: ``You Gave Me a Mountain ''(sometimes credited as`` Lord, You Gave Me a Mountain'') is a song written by country singer - songwriter Marty Robbins during the 1960s. It has been recorded by many artists, including Robbins himself, but the highest - charting version of the song was by Frankie Laine in 1969. This version was included on Laine's album of the same name.
Document 11: Been All Around This World: Been All Around This World is an album of acoustic collaboration between Jerry Garcia and David Grisman, released in 2004.
Document 12: Foggy Mountain Boys: Flatt and Scruggs and The Foggy Mountain Boys (in various forms and line-ups) recorded and performed together until 1969. The Foggy Mountain Boys are seen as one of the landmark bands in bluegrass music. Although it featured various casts, during the years of "The Lester Flatt and Earl Scruggs Grand Ole Opry Show", notably sponsored by grain and flour producer Martha White, the band showcased fiddle player Paul Warren, a master player in both the old-time and bluegrass fiddling styles, whose technique reflected all qualitative aspects of 'the bluegrass breakdown' and fast bowing style; dobro player Uncle Josh Graves, an innovator of the advanced playing style of the instrument now used in the genre, stand-up bass player Cousin Jake Tullock, and mandolinist Curly Seckler.
Document 13: Go Rest High on That Mountain: ``Go Rest High on That Mountain ''is a song written and recorded by American country music artist Vince Gill. It was released in August 1995 as the sixth single from his album When Love Finds You. It is a eulogic ballad. Gill began writing the song following the death of country music superstar Keith Whitley, who died in 1989. Gill did not finish the song until a few years later following the death of his older brother Bob, in 1993, of a heart attack. Ricky Skaggs and Patty Loveless both sang background vocals on the record.
Document 14: Dawgwood: Dawgwood is a 1993 all-instrumental album by American musician David Grisman, recorded with his group David Grisman Quintet. It is the second album recorded under Grisman's own label, Acoustic Disc. Grisman's self-named "Dawg" music was well established when this album was recorded — it is influenced by traditional bluegrass, jazz, gypsy music, Latin and more. Most of the songs are composed by Grisman, the two covers being Django Reinhardt's "Bolero de Django" — a gypsy song which Matt Eakle's flute gives a more modern flavour and "Asanhado" by Jacob do Bandolim. The last piece on the album, "New Dawg´s Rag" is a song previously released on album The David Grisman Quintet, but with "updated" arrangement.
Document 15: Don't Close Your Eyes (Keith Whitley song): ``Do n't Close Your Eyes ''is a song written by Bob McDill, and recorded by American country music artist Keith Whitley. It was released in March 1988 as third single from his album of the same name. It peaked at number - one in the United States, and number 2 in Canada. Additionally, it was Billboard's number - one country single of the year 1988.
ground_truth: bluegrass
sub_queries: The song Go Rest High on That Mountain was by whom? Answer: Vince Gill
Vince Gill >> genre Answer: bluegrass