Question: Who is part of the performers of Crusade?

full_context: Document 1: Eric Clapton: Eric Patrick Clapton, CBE (born 30 March 1945), is an English rock and blues guitarist, singer, and songwriter. He is the only three - time inductee to the Rock and Roll Hall of Fame: once as a solo artist and separately as a member of the Yardbirds and Cream. Clapton has been referred to as one of the most important and influential guitarists of all time. Clapton ranked second in Rolling Stone magazine's list of the ``100 Greatest Guitarists of All Time ''and fourth in Gibson's`` Top 50 Guitarists of All Time''. He was also named number five in Time magazine's list of ``The 10 Best Electric Guitar Players ''in 2009.
Document 2: Alex Bevan: The release of the album Springboard got him some public recognition due to the local hit song Skinny Little Boy. In 1977 he performed on the air on Cleveland's WMMS Radio with a band called Alex Bevan and the Buzzard Band, featuring DJ Matt the Cat on guitar. He performed in the mid-1970s with an acoustic trio consisting of two guitars and electric bass, and opened for such acts as Seals and Crofts, The Michael Stanley Band, The Doobie Brothers and Hall & Oates. He soon added David Krauss from the band Tiny Alice to the group, supplying percussion and harmonica. They toured either under the name Grand River Band or Alex Bevan and Friends from 1979 until 1981, and produced the albums The Grand River Lullaby, Alex Bevan and Friends Live, and Simple Things Done Well. In the early 80's Bevan produced the direct - to - disk digital solo album Tales of the Low Tech Troubadour Vol. 1. He played in the band Alex Bevan & Cuttlefish from 1984 through 1986. In the late 80s to early 90s, he produced the albums Best Kept Secrets, Cuttlefish Live, and Watersongs.
Document 3: I'm Your Witchdoctor: "I'm Your Witchdoctor" is a 1965 single by John Mayall & the Bluesbreakers composed by Mayall, produced by Jimmy Page, and issued on the Immediate label. The exact date or London studio for the recording session has not been determined, but in all likelihood it was recorded at IBC Studios in August 1965 after Page was appointed house producer at Immediate Records. Instead of featuring a regular guitar solo, the recording is characterized by Clapton’s overdriven one-note sustain.
Document 4: Hard rock: Blues rock acts that pioneered the sound included Cream, The Jimi Hendrix Experience, and The Jeff Beck Group. Cream, in songs like "I Feel Free" (1966) combined blues rock with pop and psychedelia, particularly in the riffs and guitar solos of Eric Clapton. Jimi Hendrix produced a form of blues-influenced psychedelic rock, which combined elements of jazz, blues and rock and roll. From 1967 Jeff Beck brought lead guitar to new heights of technical virtuosity and moved blues rock in the direction of heavy rock with his band, The Jeff Beck Group. Dave Davies of The Kinks, Keith Richards of The Rolling Stones, Pete Townshend of The Who, Hendrix, Clapton and Beck all pioneered the use of new guitar effects like phasing, feedback and distortion. The Beatles began producing songs in the new hard rock style beginning with the White Album in 1968 and, with the track "Helter Skelter", attempted to create a greater level of noise than the Who. Stephen Thomas Erlewine of AllMusic has described the "proto-metal roar" of "Helter Skelter," while Ian MacDonald argued that "their attempts at emulating the heavy style were without exception embarrassing."
Document 5: Solid body: The origins of the solid body electric guitar are confusing. The first commercially available solid body electric Spanish guitar was produced by the Rickenbacker company in 1931. Les Paul, a guitarist, is often erroneously credited with inventing the first solid body, but Fender is often incorrectly credited as the first to commercially market a solid body electric guitar, which itself was based on a design by Merle Travis. Also it is reported that around the same time (1940) a solid body was created by Jamaican musician and inventor, Hedley Jones. In the 1940s, Les Paul created a guitar called the ``Log, ''which came`` from the 4'' by 4 ''solid block of pine which the guitarist had inserted between the sawed halves of the body that he'd just dismembered. He then carefully re-joined the neck to the pine log, using some metal brackets.'' He then put some pickups that he designed on it. He soon went to companies asking if they would buy his guitar. They turned him down. However, after the Fender Telecaster electric guitar became popular, the Gibson company contacted him and had him endorse a model named after him, The Les Paul guitar. It came out in 1952.
Document 6: While My Guitar Gently Weeps: On 6 September, during a ride from Surrey into London, Harrison asked Clapton to play guitar on the track. Clapton, who recognised Harrison's talent as a songwriter, and considered that his abilities had long been held back by Lennon and McCartney, was nevertheless reluctant to participate; he later recalled that his initial response was: ``I ca n't do that. Nobody ever plays on Beatles records. ''Harrison convinced him, and Clapton's lead guitar part, played on Harrison's Gibson Les Paul electric guitar`` Lucy'' (a recent gift from Clapton), was overdubbed that evening. Recalling the session in his 2007 autobiography, Clapton says that, while Lennon and McCartney were ``fairly non-committal '', he thought the track`` sounded fantastic'', adding: ``I knew George was happy, because he listened to it over and over in the control room. ''
Document 7: Lucy (guitar): "Lucy" is the name George Harrison of the Beatles gave to the unique red Gibson Les Paul guitar he received from Eric Clapton in August 1968. Previously owned by rock guitarists John Sebastian and Rick Derringer, Lucy is one of the most famous electric guitars in the world.
Document 8: Crusade (album): Crusade is the fourth album and third studio album by the British blues rock band John Mayall & the Bluesbreakers, released on 1 September 1967 on Decca Records. It was the follow-up to "A Hard Road", also released in 1967. As with their two previous albums, "Crusade" was produced by Mike Vernon. The album was the first recordings of the then-18-year-old guitarist, Mick Taylor.
Document 9: Crawling up a Hill: "Crawling up a Hill" is a song written by John Mayall, and recorded by John Mayall & the Bluesbreakers. The song was released as a studio recorded single in 1964 and as part of the live album, "John Mayall Plays John Mayall", in 1965. The single was the first released recording to feature future Fleetwood Mac core member John McVie on bass.
Document 10: For Your Love: The Yardbirds recorded ``For Your Love ''at the IBC Studios in London on 1 February 1965. The majority of the song was recorded with singer Keith Relf and drummer Jim McCarty backed by session musician Ron Prentice on bowed bass, Denny Piercy on bongos, and organist Brian Auger on harpsichord. Guitarists Eric Clapton and Chris Dreja only perform during the song's double - time middle break section. Bassist Paul Samwell - Smith assumed the production duties and is listed as musical director on the 45. At the conclusion of the session, Auger wondered,`` Who, in their right mind, is going to buy a pop single with harpsichord on it?''
Document 11: Eric Clapton: Clapton was born on 30 March 1945 in Ripley, Surrey, England, to 16-year-old Patricia Molly Clapton (7 January 1929 – March 1999) and Edward Walter Fryer (21 March 1920 – 15 May 1985), a 25-year-old soldier from Montreal, Quebec. Fryer shipped off to war prior to Clapton's birth and then returned to Canada. Clapton grew up believing that his grandmother, Rose, and her second husband, Jack Clapp, Patricia's stepfather, were his parents, and that his mother was actually his older sister. The similarity in surnames gave rise to the erroneous belief that Clapton's real surname is Clapp (Reginald Cecil Clapton was the name of Rose's first husband, Eric Clapton's maternal grandfather). Years later, his mother married another Canadian soldier and moved to Germany, leaving young Eric with his grandparents in Surrey.Clapton received an acoustic Hoyer guitar, made in Germany, for his thirteenth birthday, but the inexpensive steel-stringed instrument was difficult to play and he briefly lost interest. Two years later Clapton picked it up again and started playing consistently. Clapton was influenced by the blues from an early age, and practised long hours to learn the chords of blues music by playing along to the records. He preserved his practice sessions using his portable Grundig reel-to-reel tape recorder, listening to them over and over until he felt he'd got it right.In 1961, after leaving Hollyfield School in Surbiton, Clapton studied at the Kingston College of Art but was dismissed at the end of the academic year because his focus remained on music rather than art. His guitar playing was so advanced that, by the age of 16, he was getting noticed. Around this time, Clapton began busking around Kingston, Richmond, and the West End.
Document 12: The History of Eric Clapton: The History of Eric Clapton is a compilation double LP, released in 1972 by Polydor Records in the United Kingdom, and Atco Records in the United States. It features Eric Clapton performing in various bands between 1964 and 1970, including The Yardbirds, Cream, Blind Faith and Derek and the Dominos.
Document 13: Marshall Bluesbreaker: The Bluesbreaker, which derives its nickname from being used by Eric Clapton with John Mayall & The Bluesbreakers, is credited with delivering "the sound that launched British blues-rock in the mid-1960s." It was Marshall's first combo amplifier, and was described as "arguably the most important [amplifier] in the company's history" and "the definitive rock amplifier."
Document 14: Hard rock: In the early 1970s the Rolling Stones developed their hard rock sound with Exile on Main St. (1972). Initially receiving mixed reviews, according to critic Steve Erlewine it is now "generally regarded as the Rolling Stones' finest album". They continued to pursue the riff-heavy sound on albums including It's Only Rock 'n' Roll (1974) and Black and Blue (1976). Led Zeppelin began to mix elements of world and folk music into their hard rock from Led Zeppelin III (1970) and Led Zeppelin IV (1971). The latter included the track "Stairway to Heaven", which would become the most played song in the history of album-oriented radio. Deep Purple continued to define hard rock, particularly with their album Machine Head (1972), which included the tracks "Highway Star" and "Smoke on the Water". In 1975 guitarist Ritchie Blackmore left, going on to form Rainbow and after the break-up of the band the next year, vocalist David Coverdale formed Whitesnake. 1970 saw The Who release Live at Leeds, often seen as the archetypal hard rock live album, and the following year they released their highly acclaimed album Who's Next, which mixed heavy rock with extensive use of synthesizers. Subsequent albums, including Quadrophenia (1973), built on this sound before Who Are You (1978), their last album before the death of pioneering rock drummer Keith Moon later that year.
Document 15: Ten Years Are Gone: Ten Years Are Gone is a double album by John Mayall, recorded at Sunset Sound, Los Angeles, and released in 1973. Like its predecessors "Jazz Blues Fusion" and "Moving On", it features Freddy Robinson on guitar and Blue Mitchell on trumpet.
ground_truth: Eric Clapton
sub_queries: Crusade >> performer Answer: John Mayall & the Bluesbreakers
John Mayall & the Bluesbreakers >> has part Answer: Eric Clapton