Question:
Motorhead () were an English rock band formed in June 1975 by bassist, singer, and songwriter Ian "Lemmy" Kilmister, who was the sole constant member, guitarist Larry Wallis and drummer Lucas Fox. The band are often considered a precursor to the new wave of British heavy metal, which re-energised heavy metal in the late 1970s and early 1980s. Though several guitarists and drummers have played in Motorhead, most of their best-selling albums and singles feature the work of "Fast" Eddie Clarke on guitar and Phil "Philthy Animal" Taylor on drums. Motorhead released 22 studio albums, 10 live recordings, 12 compilation albums, and five EPs over a career spanning 40 years.
From 26 March to 3 April 1986, the band toured Germany, the Netherlands and Denmark on their "Easter Metal Blast" and in June, played two dates in Bologna and Milan in Italy. The court case with Bronze was finally settled in the band's favour. The band's management instigated their own label, GWR. Recording took place in Master Rock Studios, London and the single "Deaf Forever" was released on 5 July as a taster for the Orgasmatron album, which was released on 9 August. On the same day as the release of the album, Lemmy and Wurzel were interviewed by Andy Kershaw on the BBC Radio 1 Saturday Live show and "Orgasmatron" and "Deaf Forever" were played. The single reached No. 67 and the album reached No. 21 in the UK charts. On 16 August, the band played at the Monsters of Rock at Castle Donington and was recorded by BBC Radio 1 for a future Friday Rock Show broadcast. The performance closed with a flyover by a couple of Second World War German aircraft. Also that day Lemmy was filmed giving his views on spoof metal act "Bad News" for inclusion in a Peter Richardson Comic Strip film entitled "More Bad News" since the band featuring Rik Mayall, Peter Richardson, Nigel Planer and Adrian Edmondson were also performing at Donington. In September the band conducted their "Orgasmatron" tour in Great Britain, supported by fledgling act Zodiac Mindwarp and the Love Reaction. In October they toured America and in December were in Germany. In 1987, during the filming of Eat the Rich - in which Lemmy was taking a starring role alongside well-known comedy actors such as Robbie Coltrane, Kathy Burke, the regulars from The Comic Strip ensemble, and various other musician cameo appearances - Gill left the band and Taylor returned to appear in the band's cameo as "In House Club Band" alongside Wurzel and Campbell. The band wrote "Eat the Rich" especially for the film, its soundtrack featured tracks from Orgasmatron and Wurzel's solo single "Bess". The band's second album for GWR was Rock 'n' Roll, released on 5 September, after a tight work schedule in the studio. While having some popular tracks and using "Eat the Rich" as its second track, the band commented that the album was virtually "nailed together". On 2 July 1988 Motorhead were one of the performers at the Giants of Rock Festival in Hameenlinna, Finland. The tracks were released as No Sleep at All on 15 October. A single from the album was planned with the band wanting "Traitor" as the A-side, but "Ace of Spades" was chosen instead. When the band noticed the change, they refused to allow the single to be distributed to the shops, and it was withdrawn and became available only on the "No Sleep at All" tour and through the Motorheadbangers fan club. While they continued to play live shows during 1989 and 1990, Motorhead once again felt unhappy with their career, and a court case with GWR followed, which was not resolved until mid-1990.
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was rock'n' roll also the name of an album?

Answer:
The band's second album for GWR was Rock 'n' Roll, released on 5 September,

Question:
ZZ Top is an American rock band formed in 1969 in Houston, Texas. The band has, since 1970, consisted of bassist and lead vocalist Dusty Hill, guitarist and lead vocalist Billy Gibbons (the band's leader, main lyricist and musical arranger), and drummer Frank Beard. "As genuine roots musicians, they have few peers", according to former musician, critic and collector Michael "Cub" Koda. "Gibbons is one of America's finest blues guitarists working in the arena rock idiom [...] while Hill and Beard provide the ultimate rhythm section support."
The original line-up was formed in Houston and consisted of Gibbons, organist Lanier Greig (died February 2013) and drummer Dan Mitchell. The name of the band was Gibbons' idea. The band had a little apartment covered with concert posters and he noticed that many performers' names utilized initials. Gibbons particularly noticed B.B. King and Z.Z. Hill and thought of combining the two into "ZZ King", but considered it too similar to the original name. He then figured that "king is going at the top" which brought him to "ZZ Top". ZZ Top was managed by Bill Ham, a Waxahachie, Texas native who had befriended Gibbons a year earlier. They released their first single, "Salt Lick", in 1969, and the B-side contained the song "Miller's Farm". Both songs were credited to Gibbons. Immediately after the recording of "Salt Lick", Greig was replaced by bassist Billy Ethridge, a band-mate of Stevie Ray Vaughan, and Mitchell was replaced by Frank Beard of the American Blues. Due to lack of interest from U.S. record companies, ZZ Top accepted a record deal from London Records. Unwilling to sign a recording contract, Ethridge quit the band and Dusty Hill was selected as his replacement. After Hill moved from Dallas to Houston, ZZ Top signed with London in 1970. They performed their first concert together at the Knights of Columbus Hall in Beaumont on February 10. In addition to assuming the role as the band's leader, Gibbons became the main lyricist and musical arranger. With the assistance of Ham and engineer Robin Hood Brians, ZZ Top's First Album (1971) was released and exhibited the band's humour, with "barrelhouse" rhythms, distorted guitars, double entendres, and innuendo. The music and songs reflected ZZ Top's blues influences. Following their debut album, the band released Rio Grande Mud (1972), which failed commercially and the promotional tour consisted of mostly empty auditoriums.
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who was a leader

Answer:
In addition to assuming the role as the band's leader, Gibbons became the main lyricist and musical arranger.