Iron Maiden have sold over 130 million copies of their albums worldwide and have obtained over 600 certifications. Their three most recent albums - The Final Frontier (2010), The Book of Souls (2015), and Senjutsu (2021) - have all reached No. 1 in more than 20 countries. Īfter some turbulence in the 1990s, the return of lead vocalist Bruce Dickinson and guitarist Adrian Smith in 1999 saw the band undergo a resurgence in popularity, with a series of new albums and highly successful tours. The Number of the Beast is among the most popular heavy metal albums of all time, having sold almost 20 million copies worldwide. The addition of Dickinson was a turning point in their career, establishing them as one of heavy metal's most important bands. As pioneers of the new wave of British heavy metal movement, Iron Maiden released a series of UK and US Platinum and Gold albums, including 1980's debut album, 1981's Killers, and 1982's The Number of the Beast – its first album with Bruce Dickinson, who replaced Paul Di'Anno as lead singer. Although fluid in the early years of the band, the line-up for most of the band's history has consisted of Harris, lead vocalist Bruce Dickinson, drummer Nicko McBrain, and guitarists Dave Murray, Adrian Smith and Janick Gers. Iron Maiden are an English heavy metal band formed in Leyton, East London, in 1975 by bassist and primary songwriter Steve Harris.