Question: Of the founding members of the country rock group, Great Speckled Bird, who was primarily known for his work as a pedal steel guitarist?

full_context: Document 1: The Milk Carton Kids: The Milk Carton Kids are an American indie folk duo from Eagle Rock, California, United States, consisting of singers and guitarists Kenneth Pattengale and Joey Ryan, who formed the group in early 2011. The Grammy-nominated, flat-picking harmony duo have since emerged as a powerful voice defining the continuing folk tradition whose virtuosity defines The Milk Carton Kids to the delight of both traditionalists and newcomers to the folk movement alike. NPR has described their approach to music as "gorgeous contemporary folk" and "Gillian Welch & David Rawlings-meets-Simon & Garfunkel with a splash of The Everly Brothers", which fairly represents the band's music while also appealing to the intended audience. The band has recorded and released four albums: "Retrospect", "Prologue", "The Ash & Clay" and "Monterey". The forewords to both "Prologue" and "The Ash & Clay" were written by singer-songwriter and producer Joe Henry. The band is noted for releasing their first two albums for free and for playing their vintage guitars; Ryan playing a 1951 Gibson J-45 and Pattengale a 1954 Martin 0-15.
Document 2: Someday Soon (Ian Tyson song): "Someday Soon" is a song composed by Canadian singer/songwriter Ian Tyson. He recorded the song with his wife, Sylvia Tyson, as the duo Ian & Sylvia in 1964. Although this version was not released as a single, the song has been recorded by Judy Collins, Moe Bandy and Suzy Bogguss, all of whom had chart success with it. Collins's version was issued as a single to the pop format, while Bandy's and Bogguss's versions were hit singles on country music radio.
Document 3: Safe at Home: Safe at Home is a 1968 album by country rock group The International Submarine Band, led by the then-unknown 21-year-old Gram Parsons. The group's only album release, "Safe at Home" featured four of Parsons' original compositions rounded out by six covers of classic country and rock and roll songs made famous by the likes of Johnny Cash, Elvis Presley, Merle Haggard, and Hank Snow. Described as "hippie and hillbilly in equal measure", the album helped to forge the burgeoning country rock movement of the late 1960s and early 1970s.
Document 4: Great Speckled Bird (album): Great Speckled Bird is a country rock album by Great Speckled Bird, a band formed in 1969 by Canadian musicians Ian and Sylvia Tyson. The other group members at the time of recording were Buddy Cage, on pedal steel guitar, Amos Garrett, on guitar and backup vocals, and N.D. Smart, on drums. Nashville session musicians David Briggs and Norbert Putnam sat in, with Briggs on piano and Putnam on bass guitar. Although founding member Ken Kalmusky is listed in the original liner notes, he had actually departed the group prior to recording.
Document 5: Julian King (recording engineer): Julian King is a Grammy Award-winning recording engineer, mix engineer, record producer and musician based in Nashville, Tennessee. In one capacity or another, he has been involved with records that have sold more than 100 million units (see listing below). King has worked with some of the most notable artists in country music, such as George Jones, George Strait, Waylon Jennings, Willie Nelson, Kenny Rogers and Merle Haggard. Other artists he has worked with include Tim McGraw, Vince Gill, Charlie Daniels, Hank Williams, Jr., Clint Black, Martina McBride, Randy Travis, Brooks & Dunn, Toby Keith, Alabama and The Judds. His credits also extend to some of the hottest young acts in country music today, such as Sugarland, Chris Young, Kellie Pickler, Lauren Alaina and Casey James.
Document 6: Ben Keith: Bennett Keith Schaeufele (March 6, 1937 – July 26, 2010), better known by his stage name Ben Keith, was an American musician and record producer. Known primarily for his work as a pedal steel guitarist with Neil Young, Keith was a fixture of the Nashville country music community in the 1950s and 1960s before working with numerous successful rock, country and pop artists as both a producer and versatile, multi-instrumentalist sideman for over four decades.
Document 7: 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 8: B. J. Cole: Brian John "B. J." Cole (born 17 June 1946) is an English pedal steel guitarist, who has long been active as a session and solo musician. Coming to prominence in the early 1970s with the band Cochise, Cole has played in many styles, ranging from mainstream pop and rock to jazz and eclectic experimental music, but has never forgotten the instrument's roots in country music. Through his varied and extensive session work and long career as a performer, he has come to be regarded as Britain's pre-eminent pedal steel guitarist. Cole also plays lap steel and dobro.
Document 9: The Great Speckled Bird (song): "The Great Speckled Bird" is a hymn from the Southern United States whose lyrics were written by the Reverend Guy Smith. It is an allegory referencing Fundamentalist self-perception during the Fundamentalist–Modernist Controversy. The song is in the form of AABA and has a 12 bar count. It is based on Jeremiah 12:9, ""Mine heritage is unto me as a speckled bird, the birds round about are against her; come ye, assemble all the beasts of the field, come to devour."" It was recorded in 1936 by Roy Acuff. It was also later recorded by Johnny Cash and Kitty Wells (both in 1959), Pearly Brown (1961), Hank Locklin (1962), Marty Robbins (1966), Lucinda Williams (1978), Bert Southwood (1990), Marion Williams, and Jerry Lee Lewis.
Document 10: Paul Franklin (musician): Paul V. Franklin (born May 31, 1954 in Detroit, Michigan) is an American multi-instrumentalist, known mainly for his work as a steel guitarist. He began his career in the 1970s as a member of Barbara Mandrell's road band; in addition he toured with Vince Gill, Mel Tillis, Jerry Reed and Dire Straits. He has since become a prolific session musician in Nashville, Tennessee, playing on more than 500 albums. He has been named by the Academy of Country Music as Best Steel Guitarist on several occasions. In addition to the pedal steel guitar and lap steel guitar, Franklin plays Dobro, fiddle, and drums, as well as three custom-built instruments called the Pedabro, The Box, and the baritone steel guitar.
Document 11: Jeff Newman (musician): Jeff Newman (January 7, 1942 – April 7, 2004) was an American country musician who played the pedal steel guitar. He was a veteran Nashville session player. A devoted teacher and player, Newman also wrote a column for the short-lived specialty magazine "Steel Guitarist", appearing on the cover of the September 1979 issue. He is widely regarded as having been the premier instructor of the Pedal Steel Guitar and, together with his wife, Fran, operated the Jeffran College of Pedal Steel Guitar outside Nashville for many years. His instructional material remains available and popular as of this writing (2017). Newman was inducted into the International Steel Guitar Hall of Fame in 1999.
Document 12: Larry Knechtel: Lawrence William "Larry" Knechtel (August 4, 1940 – August 20, 2009) was an American keyboard player and bassist, best known as a member of the Wrecking Crew, a collection of Los Angeles-based session musicians who worked with such renowned artists as Simon & Garfunkel, Duane Eddy, the Beach Boys, the Mamas & the Papas, the Monkees, the Partridge Family, the Doors, the Grass Roots, Jerry Garcia, and Elvis Presley, and as a member of the 1970s band Bread.
Document 13: Great Speckled Bird (band): Great Speckled Bird was a country rock group formed in 1969 by the Canadian musical duo Ian & Sylvia. Ian Tyson sang, played guitar and composed. Sylvia Tyson sang, composed and occasionally played piano. The other founding members were Amos Garrett on guitar and occasional vocals, Ben Keith on steel guitar, Ken Kalmusky on bass and Ricky Marcus on drums. They were named after the song, "The Great Speckled Bird", as recorded by Roy Acuff(1938).
Document 14: Roy Nichols: Roy Nichols (October 21, 1932 – July 3, 2001) was an American country music guitarist best known as the lead guitarist for country music legend Merle Haggard for more than two decades. He was known for his guitar technique, a mix of fingerpicking and pedal steel-like bends, usually played on a Fender Telecaster electric guitar. Nichols is considered one of the founders of the country music subgenre the “Bakersfield Sound,” which includes such notable country artists as Haggard, Buck Owens, Don Rich, [
Document 15: Chet Atkins: Chester Burton "Chet" Atkins (June 20, 1924 – June 30, 2001), known as "Mr. Guitar" and "The Country Gentleman", was an American musician, occasional vocalist, songwriter, and record producer, who along with Owen Bradley and Bob Ferguson, among others, created the country music style that came to be known as the Nashville sound, which expanded country music's appeal to adult pop music fans. He was primarily known as a guitarist. He also played the mandolin, fiddle, banjo, and ukulele.
ground_truth: Ben Keith