Iron Maiden is a British heavy metal band formed in Leyton, East London in 1975 by bassist and primary songwriter Steve Harris. The band played a significant role in the New Wave of British Heavy Metal movement and quickly rose to prominence with their energetic performances, elaborate stage shows, and distinctive sound characterized by galloping bass lines, harmonized guitar riffs, and powerful vocals. Iron Maiden released their self-titled debut album in 1980, which was followed by a series of critically and commercially successful albums. With the addition of vocalist Bruce Dickinson in 1981, the band released The Number of the Beast in 1982, an album that propelled them into global stardom. Throughout the 1980s, Iron Maiden released several landmark albums including Piece of Mind, Powerslave, Somewhere in Time, and Seventh Son of a Seventh Son. Despite lineup changes and evolving musical trends, Iron Maiden maintained a dedicated fan base and continued touring extensively. In the 1990s, the band experienced a period of transition with different vocalists but reunited with Bruce Dickinson and guitarist Adrian Smith in 1999. This reunion ushered in a resurgence of popularity, marked by well-received albums such as Brave New World and The Book of Souls. Known for their mascot Eddie, elaborate album artwork, and theatrical live performances, Iron Maiden remains one of the most influential and enduring acts in heavy metal history. They have sold over 100 million records worldwide and have inspired countless bands and musicians. The group continues to tour internationally and release new music, sustaining a legacy that spans nearly five decades.