Stephen Percy Harris is an English musician who is the bassist, keyboardist, backing vocalist, primary songwriter and founder/leader of heavy metal band Iron Maiden. He has been the band's only constant member since their inception in 1975 and one of only two to have appeared on all of their albums, the other being guitarist Dave Murray.
David Michael Murray is an English guitarist and songwriter, best known as a member of the British heavy metal band Iron Maiden since 1976. He joined Iron Maiden early in its history, and is the second-longest serving member of the band after founder Steve Harris. Murray and Harris are the only members of Iron Maiden to have appeared on all of the band's releases.