Question: Before the Storm is the fourth studio album by British heavy metal band Samson, it was released with the new vocalist Nicky Moore, which English member left to join Iron Maiden ?

Context articles: List of Iron Maiden concert tours
McCoy (band)
Bruce Dickinson discography
Shock Tactics
Samson (band)
Nicky Moore
World's Only Female Tribute to Iron Maiden
Before the Storm (Samson album)
List of songs recorded by Iron Maiden
Bruce Dickinson

Iron Maiden are a British heavy metal band, founded in 1975 by bassist Steve Harris in London, England.
 After several personnel changes in the 1970s, the band settled on a lineup of Harris, Paul Di'Anno (lead vocals), Dave Murray (lead and rhythm guitars), Dennis Stratton (backing vocals, lead and rhythm guitar) and Clive Burr (drums), before they set out on their first professional tour, the Metal for Muthas Tour which supported the compilation album of the same name.
 After taking on a supporting slot with Judas Priest on their British Steel Tour and setting out on their own headline tour in support of their debut album, "Iron Maiden", the band supported Kiss on the European leg of their Unmasked Tour, following which Stratton was dismissed because of musical differences.
 Guitarist Adrian Smith was hired, following which Iron Maiden set out on a short series of UK dates before recording their second studio album, "Killers".
McCoy was a British heavy metal band under the new wave of British heavy metal era.
 John McCoy also led his own band under the simple name "McCoy" during the 1980s, which has been integrated with members of bands like Iron Maiden, Samson and Gillan.
Bruce Dickinson, a British heavy metal singer, has released six studio albums, two live albums, one compilations, ten singles, three video albums, fourteen music videos, and one box set.
 In 1979, after playing in local groups, Dickinson joined hard rock band Samson.
 He departed after two years to become Iron Maiden's lead vocalist.
 His debut with this band is considered a "masterpiece", which was followed with a series of top-ten releases.
 In 1989, while Iron Maiden were taking a year off, Dickinson and former Gillan guitarist, Janick Gers, composed a song for .
 His solo debut, "Tattooed Millionaire" (1990), was an effort that favoured a hard rock/pop metal approach, different from what fans assumed would be an aggressive, Iron Maiden-like album.
 Four songs—the title track, "Dive!
 Dive!
 Dive!
", "Born in '58", and a cover version of David Bowie's "All the Young Dudes"—were released as singles.
 Dickinson returned to Iron Maiden, accompanied by Gers as the new guitarist, and the project went on hiatus. "
Dive!
 Dive!
 Live!
" was a live video recorded from a concert in Los Angeles, California, in August 1990, and released in July 1991.
Shock Tactics is the third studio album by British heavy metal band Samson, released in 1981.
 It was singer Bruce Dickinson's last one with the band before joining Iron Maiden (who were coincidentally recording "Killers", their last album with Paul Di'Anno, in the same studio at the same time of Samson).
Samson were a British hard rock band formed in 1977 by guitarist and vocalist Paul Samson.
 They are best known for their first three albums with future Iron Maiden singer Bruce Dickinson, then known as "Bruce Bruce", and drummer Thunderstick (real name Barry Graham Purkis), who wore a leather mask and performed on stage in a metal cage.
 Drummer Clive Burr was also a member of the band, both before and after his tenure with Iron Maiden.
 Drummer Mel Gaynor had a successful music career being a member of Simple Minds for over 20 years.
 Dickinson's replacement on vocals, Nicky Moore, performed with Samson throughout the mid-1980s and again from the late 1990s onwards; he has also been a member of the bands Mammoth and Nicky Moore and the Blues Corporation.
Nicky Moore (born 1952, England) is an English blues, rock and heavy metal singer, who is best known as a former member of the British band Samson.
 He replaced Bruce Dickinson who left the band to join Iron Maiden in 1982.
 Moore left Samson in the late 1980s and rejoined in the late 1990s.
The Iron Maidens: World's Only Female Tribute to Iron Maiden is the debut album by American all-female tribute band The Iron Maidens.
 The album features selected tracks originally performed by British heavy metal band Iron Maiden.
 Michael Kenney, keyboardist for Iron Maiden, appears as a guest musician on the Japanese import version.
Before the Storm is the fourth studio album by British heavy metal band Samson.
 It was released in 1982, with the new vocalist Nicky Moore.
 He was recruited to replace Bruce Dickinson after his departure, to join Iron Maiden.
 The drummer Mel Gaynor was also replaced by Pete Jupp, when Gaynor left to join Simple Minds.
Iron Maiden are an English heavy metal band formed by bassist Steve Harris in 1975.
 The band's first album, 1980's "Iron Maiden", was written primarily by Harris, with vocalist Paul Di'Anno co-writing two tracks and guitarist Dave Murray contributing "Charlotte the Harlot".
 The 1981 follow-up, "Killers", was written almost entirely by the bassist, with frontman Di'Anno contributing only to the title track, "Killers" (the North American bonus track "Twilight Zone" was credited to Harris and Murray).
 Bruce Dickinson replaced Di'Anno after the release of "Killers", although he did not contribute any songwriting to "The Number of the Beast", released in 1982, which featured three songs co-written by guitarist Adrian Smith.
 "The Number of the Beast" also spawned Iron Maiden's first UK Singles Chart top ten in the form of "Run to the Hills", which charted at number seven on its release.
 It was not until 1983's "Piece of Mind" that the songwriting process became a more varied and collaborative approach, with just four of its nine tracks being credited solely to Harris, two to Dickinson and Smith, one to Harris and Murray, one to Dickinson alone, and one to Harris, Dickinson, and Smith.
 The Dickinson and Smith-penned "Flight of Icarus" was the first Iron Maiden single to chart in the United States, reaching number eight on the "Billboard" Mainstream Rock chart.
Paul Bruce Dickinson (born 7 August 1958), known professionally as Bruce Dickinson, is an English singer, songwriter, musician, airline pilot, entrepreneur, author and broadcaster.
 He is the lead singer of the heavy metal band Iron Maiden and is renowned for his wide-ranging operatic vocal style and energetic stage presence.