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. Atkins's signature picking style was inspired by Merle Travis.
Signing with RCA Victor
While working with a Western band in Denver, Colorado, Atkins came to the attention of RCA Victor. Siman had been encouraging Steve Sholes to sign Atkins, as his style (with the success of Merle Travis as a hit recording artist) was suddenly in vogue. Sholes, A&R director of country music at RCA, tracked Atkins down in Denver.  He made his first RCA Victor recordings in Chicago in 1947. They did not sell, but he did some studio work for RCA that year but had relocated to Knoxville again, where he worked with Homer and Jethro on WNOX's new Saturday night radio show The Tennessee Barn Dance and the popular Midday Merry Go Round.  In 1949, he left WNOX to join June Carter with Mother Maybelle and the Carter Sisters on KWTO. This incarnation of the old Carter Family featured Maybelle Carter and daughters June, Helen, and Anita. Their work soon attracted attention from the Grand Ole Opry. The group relocated to Nashville in the mid-1950s. Atkins began working on recording sessions and performing on WSM-AM and the Opry. Atkins became a member of the Opry in the 1950s.  While he had not yet had a hit record for RCA Victor, his stature was growing. He began assisting Sholes as a session leader when the New York-based producer needed help organizing Nashville sessions for RCA Victor artists. Atkins's first hit single was "Mr. Sandman", followed by "Silver Bell", which he recorded as a duet with Hank Snow. His albums also became more popular. He was featured on ABC-TV's The Eddy Arnold Show in the summer of 1956 and on Country Music Jubilee in 1957 and 1958 (by then renamed Jubilee USA).  In addition to recording, Atkins was a design consultant for Gretsch, which manufactured a popular Chet Atkins line of electric guitars from 1955-1980. He became manager of RCA Victor's Nashville studio, eventually inspiring and seeing the completion of the legendary RCA Studio B, the first studio built specifically for the purpose of recording on the now-famous Music Row.

Q: Who signed Chet
A: Siman had been encouraging Steve Sholes to sign Atkins,
Did he sign him?
Sholes, A&R director of country music at RCA, tracked Atkins down
Sholes, A&R director of country music at RCA, tracked Atkins down