input: Largely because of the popularity of artists such as Jefferson and his contemporaries Blind Blake and Ma Rainey, Paramount became the leading recording company for the blues in the 1920s. Jefferson's earnings reputedly enabled him to buy a car and employ chauffeurs (this information has been disputed); he was given a Ford car "worth over $700" by Mayo Williams, Paramount's connection with the black community. This was a common compensation for recording rights in that market. Jefferson is known to have done an unusual amount of traveling for the time in the American South, which is reflected in the difficulty of placing his music in a single regional category.  Jefferson's "old-fashioned" sound and confident musicianship made it easy to market him. His skillful guitar playing and impressive vocal range opened the door for a new generation of male solo blues performers, such as Furry Lewis, Charlie Patton, and Barbecue Bob. He stuck to no musical conventions, varying his riffs and rhythm and singing complex and expressive lyrics in a manner exceptional at the time for a "simple country blues singer." According to the North Carolina musician Walter Davis, Jefferson played on the streets in Johnson City, Tennessee, during the early 1920s, at which time Davis and the entertainer Clarence Greene learned the art of blues guitar.  Jefferson was reputedly unhappy with his royalties (although Williams said that Jefferson had a bank account containing as much as $1500). In 1927, when Williams moved to Okeh Records, he took Jefferson with him, and Okeh quickly recorded and released Jefferson's "Matchbox Blues", backed with "Black Snake Moan". It was his only Okeh recording, probably because of contractual obligations with Paramount. Jefferson's two songs released on Okeh have considerably better sound quality than his Paramount records at the time. When he returned to Paramount a few months later, "Matchbox Blues" had already become such a hit that Paramount re-recorded and released two new versions, with the producer Arthur Laibly. In 1927, Jefferson recorded another of his classic songs, the haunting "See That My Grave Is Kept Clean" (again using the pseudonym Deacon L. J. Bates), and two other uncharacteristically spiritual songs, "He Arose from the Dead" and "Where Shall I Be". "See That My Grave Is Kept Clean" was so successful that it was re-recorded and re-released in 1928.

Answer this question "Was he a hit with the public?"
output: varying his riffs and rhythm and singing complex and expressive lyrics in a manner exceptional at the time for a "simple country blues singer."

Question: Alexandra Elene MacLean Denny (6 January 1947 - 21 April 1978) was an English singer-songwriter who was lead singer of the British folk rock band Fairport Convention. She has been described as "the pre-eminent British folk rock singer". After briefly working with the Strawbs, Denny joined Fairport Convention in 1968, remaining with them until 1969. She formed the short-lived band Fotheringay in 1970, before focusing on a solo career.

Her nursing career proved short-lived. In the meantime she had secured a place on a foundation course at Kingston College of Art, which she took up in September 1965, becoming involved with the folk club on campus. Her contemporaries at the college included guitarist and future member of Pentangle, John Renbourn.  After her first public appearance at the Barge in Kingston upon Thames Denny started working the folk club circuit in the evenings with an American-influenced repertoire, including songs by Tom Paxton, together with traditional folk songs. Denny made the first of many appearances for the BBC at Cecil Sharp House on 2 December 1966 on the Folk Song Cellar programme where she accompanied herself on two traditional songs: "Fhir a Bhata" and "Green Grow the Laurels".  Her earliest professional recordings were made a few months later in mid-1967 for the Saga label, featuring traditional songs and covers of folk contemporaries including her boyfriend of this period, the American singer-songwriter Jackson C. Frank. They were released on the albums Alex Campbell and His Friends and Sandy and Johnny with Johnny Silvo. These songs were collected on the 1970 album It's Sandy Denny where the tracks from Sandy and Johnny had been re-recorded with more accomplished vocals and guitar playing. The complete Saga studio recordings were issued on the 2005 compilation Where The Time Goes.  By this time she had abandoned her studies at art college and was devoting herself full-time to music. While she was performing at The Troubadour folk club, a member of the Strawbs heard her, and in 1967, she was invited to join the band. She recorded one album with them in Denmark which was released belatedly in 1973 credited to Sandy Denny and the Strawbs: All Our Own Work. The album includes an early solo version of her best-known (and widely recorded) composition, "Who Knows Where the Time Goes?" A demo of that song found its way into the hands of American singer Judy Collins, who chose to cover it as the title track of an album of her own, released in November 1968, thus giving Denny international exposure as a songwriter before she had become widely known as a singer.

Using a quote from the above article, answer the following question: How long did she work there?
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