Contributions:

Instrumentalist Vocalist

While not an original member of Iron Maiden, English guitarist Adrian Smith proved to be one of the missing pieces to the puzzle (singer Bruce Dickinson being the other) early on -- resulting in the band obtaining elite status among the metal masses soon after.

Between 1982 and 1989, the group issued some of the most seminal heavy metal records of all time, including the gold- and platinum-selling Piece of Mind (1983) and Powerslave (1984).