The idea to base the album around the folklore concept of the
seventh son of a seventh son came to bassist
Steve Harris after he read
Orson Scott Card's
Seventh Son. Harris stated, "It was our seventh studio album and I didn't have a title for it or any ideas at all. Then I read the story of the seventh son, this mystical figure that was supposed to have all these paranormal gifts, like second sight and what have you, and it was more, at first, that it was just a good title for the seventh album, you know? But then I rang
Bruce Dickinson and started talking about it and the idea just grew." After his songwriting contributions were rejected from the band's previous album, 1986's
Somewhere in Time, Dickinson felt that his role within the band had diminished, as he "just became the singer", but felt renewed enthusiasm when Harris explained the concept to him; "I thought, 'What a great idea! Brilliant!' And of course I was really chuffed, too, because he'd actually rung me to talk about it and ask me if I had any songs that might fit that sort of theme. I was like, 'Well, no, but give me a minute and I'll see what I can do. Speaking about the record in later years, however, Dickinson remarked that "we almost did [something great]", explaining that, "it was only half a concept album. There was no attempt to see it all the way through, like we really should have done.
Seventh Son... has no story. It's about good and evil, heaven and hell, but isn't every Iron Maiden record?" Stylistically,
Seventh Son of a Seventh Son developed the sounds first heard on
Somewhere in Time, although, on this occasion, the
synth effects were created by keyboards rather than
bass or
guitar synthesisers. According to Dickinson, the band decided not to hire a keyboard player, with the parts being "mainly one-finger stuff from Adrian [Smith, guitarist], Steve, the engineer or whoever had a finger free at the time". Harris was fond of the development, in spite of the fact that the record did not sell as well as its predecessor in the United States; "I thought it was the best album we did since
Piece of Mind. I loved it because it was more progressive—I thought the keyboards really fitted in brilliantly—'cause that's the influences I grew up with, and I was so pissed off with the Americans, because they didn't really seem to accept it. Everyone said afterwards that it was a European-sounding album. I'm not so sure about that. What's a European-sounding album? To me, it's just a Maiden-sounding album." ==Songs==