Question: English rock band Led Zeppelin's untitled fourth album, commonly known as Led Zeppelin IV, was released on 8 November 1971 by Atlantic Records. Produced by guitarist Jimmy Page, it was recorded between November 1970 and January 1971 at several locations, most prominently the Victorian house Headley Grange. After the band's previous album Led Zeppelin III received lukewarm reviews from critics, they decided their fourth album would officially be untitled. This, along with the inner sleeve's design featuring four symbols that represented each band member, led to the album being referred to variously as , Four Symbols, The Fourth Album, Untitled, Runes, The Hermit, and ZoSo (which was derived from Page's symbol).

In the lead-up to the album's release, a series of teaser advertisements depicting each symbol was placed in the music press. The album was a massive instant seller. It entered the UK chart at No. 10, rising to No.1 the following week and stayed on the chart for 90 weeks. In the US it stayed on the charts longer than any other Led Zeppelin album and became the biggest selling album in the US not to top the charts (peaking at #2). "Ultimately," writes Lewis, "the fourth Zeppelin album would be the most durable seller in their catalogue and the most impressive critical and commercial success of their career". At one point, it was ranked as one of the top five best-selling albums of all time.  Led Zeppelin IV received overwhelming praise from critics. In a contemporary review for Rolling Stone, Lenny Kaye called it the band's "most consistently good" album yet and praised the diversity of the songs: "out of eight cuts, there isn't one that steps on another's toes, that tries to do too much all at once." Billboard magazine called it a "powerhouse album" that has the commercial potential of the band's previous three albums.  Robert Christgau originally gave Led Zeppelin IV a lukewarm review in The Village Voice, but later called the album a "genre masterpiece", and wrote that it showed the band at the pinnacle of their songwriting. Even though he found their Medieval ideas limiting as usual, he said that it is "the definitive Led Zeppelin and hence heavy metal album". In his review for AllMusic, Stephen Thomas Erlewine credited the album for "defining not only Led Zeppelin but the sound and style of '70s hard rock", while "encompassing heavy metal, folk, pure rock & roll, and blues". In his album guide to heavy metal, Spin magazine's Joe Gross cited Led Zeppelin IV as a "monolithic cornerstone". BBC Music's Daryl Easlea said that the album made the band a global success and effectively combined their third album's folk ideas with their second album's hard rock style, while Katherine Flynn and Julian Ring of Consequence of Sound felt it featured their debut's blues rock, along with the other styles from their second and third albums. Led Zeppelin's Rock Hall biography described the album as "a fully realized hybrid of the folk and hard-rock directions". Music journalist Chuck Eddy named it the number one metal album of all time in his 1991 book Stairway to Hell: The 500 Best Heavy Metal Albums in the Universe.

Using a quote from the above article, answer the following question: What did some of the positive reviews say?
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Answer: but later called the album a "genre masterpiece", and wrote that it showed the band at the pinnacle of their songwriting.


Question: Lemon Henry "Blind Lemon" Jefferson (September 24, 1893 - December 19, 1929) was an American blues and gospel singer, songwriter, and musician. He was one of the most popular blues singers of the 1920s and has been called the "Father of the Texas Blues". Jefferson's performances were distinctive because of his high-pitched voice and the originality of his guitar playing. His recordings sold well, but he was not a strong influence on younger blues singers of his generation, who could not imitate him as easily as they could other commercially successful artists.

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.

Using a quote from the above article, answer the following question: What was their significance for Jefferson?
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Answer:
Jefferson's earnings reputedly enabled him to buy a car and employ chauffeurs