Question: What kind of singers were Grandpa Jones and Cousin Emmy?

Context articles: David Kelly (actor)
Lonesome Pine Fiddlers
Cousin Emmy
Grave of the Fireflies (2005 film)
Tom Jones (TV series)
A Rugrats Passover
Grandpa Jones
Santa and Pete
Trova
Dobri Dobrev

David Kelly (11 July 1929 – 12 February 2012) was an Irish actor who had regular roles in several film and television works from the 1950s onwards.
 One of the most recognisable voices and faces of Irish stage and screen, Kelly was known for his roles as Rashers Tierney in "Strumpet City", Cousin Enda in "Me Mammy", the builder Mr O'Reilly in "Fawlty Towers", and Grandpa Joe in the film "Charlie and the Chocolate Factory".
 Another notable role was as Michael O'Sullivan in "Waking Ned" .
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.
Cynthia May Carver (March 14, 1903 – April 11, 1980), known professionally as Cousin Emmy, was a banjo player and country singer who was one of the pioneering solo female stars in the country music industry.
 Although hit records eluded her, she proved to be a major name in personal appearances and on radio in the 1940s and 50s.
 In the 1960s she gained a new audience on the folk music circuit.
 Her song "Ruby, Are You Mad at Your Man?"
 became a bluegrass standard after it was covered by the Osborne Brothers.
 She started out her career by playing with Frankie Moore's Log Cabin Boys.
 She influenced the playing of Grandpa Jones.
 She appeared in two films, "Swing in the Saddle" and "The Second Greatest Sex".
Grave of the Fireflies is a live-action TV drama of "Grave of the Fireflies", made by NTV in Japan.
 It was produced in commemoration of the 60th anniversary of the end of World War II.
 The drama aired on November 1, 2005.
 Like the anime, the live-action version of "Grave of the Fireflies" focuses on two siblings struggling to survive the final days of the war in Kobe, Japan.
 Unlike the animated version, it tells the story from the point of view of their cousin (the aunt's daughter) and deals with the issue of how the war-time environment could change a kind lady into a hard-hearted woman.
 It stars Nanako Matsushima as the aunt, as well as Mao Inoue as their cousin.
Tom Jones was a syndicated television variety show hosted by Tom Jones, that aired during the 1980-1981 television season.
 Twenty four episodes of the show were produced.
 The show was produced in Vancouver, Canada.
 The format of the show was for Tom Jones to perform his old hits and solo covers, in addition to new songs with special duet partners.
 Solo covers included Jones's version of "Unchained Melody" and the Eagles' "Take It to the Limit".
 Duet highlights from the show included Jones's duet with Tina Turner of Rod Stewart's "Hot Legs", in addition to his duet with Gladys Knight of "Guilty", written by the Bee Gees and originally made popular by Barry Gibb and Barbra Streisand.
 Other singers featured included Dionne Warwick, Chaka Khan, Donny Osmond, Marie Osmond and Stephanie Mills.
 Performances from the show have been issued in multiple DVD and CD editions.
"A Rugrats Passover" is the 26th and final episode of the third season of the American animated television series "Rugrats", and its 65th episode overall.
 It was broadcast originally on April 13, 1995, on the cable network Nickelodeon.
 The plot follows series regulars Grandpa Boris and the babies as they become trapped in the attic on Passover; to pass the time, Boris tells the Jewish story of the Exodus.
 During the episode the babies themselves reenact the story, with young Tommy portraying Moses, while his cousin Angelica represents the Pharaoh of Egypt.
Louis Marshall Jones (October 20, 1913 – February 19, 1998), known professionally as Grandpa Jones, was an American banjo player and "old time" country and gospel music singer.
 He is a member of the Country Music Hall of Fame.
Santa and Pete is a 1999 American Christmas film directed by Duwayne Dunham.
 It was written by Greg Taylor, based on the novel by Christopher Moore and Pamela Johnson.
 It stars Hume Cronyn as Saint Nick, Flex Alexander as Pete, and James Earl Jones as Grandpa Nicholas.
 It first aired on CBS on December 5, 1999.
Trova is one of the great roots of the Cuban musical tree.
 In the 19th century a group of itinerant musicians known as "trovadores" moved around Oriente, especially Santiago de Cuba, earning their living by singing and playing the guitar.
 According to one writer, to qualify as a trovador in Cuba, a person should a) sing songs of his own composition, or of others of the same kind; b) accompany himself on the guitar; and c) deal poetically with the song.
 This definition fits best the singers of boleros, and less well the Afrocubans singing funky sones (El Guayabero) or even guaguancós and abakuá (Chicho Ibáñez).
 It rules out, perhaps unfairly, singers who accompanied themselves on the piano.
Dobri Dimitrov Dobrev (Bulgarian: Добри Димитров Добрев , born 20 July 1914), better known as Grandpa Dobri, Elder Dobri (Bulgarian: дядо Добри , "Dyado Dobri " ) or The Saint of Bailovo, is a Bulgarian ascetic who walks over 20 kilometers each day to sit or stand in front of the Cathedral of Alexander Nevsky in Sofia to collect money for charitable causes.
 Dobrev donates all the money he collects to charities, orphanages, churches and monasteries and he turned 100 in July 2014.
 In Bulgarian, his name translates as "good" or "kind".