"Led Zeppelin wasn't a corporate entity," Page tells Rolling Stone. "Led Zeppelin was an affair of the heart. Each of the members was important to the sum total of what we were. I like to think that if it had been me that wasn't there, the others would have made the same decision. And what were we going to do? Create a role for somebody, say, 'You have to do this, this way?' That wouldn't be honest."

The group reunited for 1985's Live Aid charity concert, joined by drummers Phil Collins and Tony Thompson (Chic), and Atlantic Records' 40th Anniversary concert in 1988 with Bonham's son, Jason, behind the kit.

Neither Page or Robert Plant were pleased with the results of either performance, so they made sure to get it right for the December 10, 2007 concert at London's O2 Arena tribute concert for friend and Atlantic Records founder Ahmet Ertegun.

"There were attempts [at reunion] that didn't work - trying to push it together in a hurry," he continued. "That's why the [2007] show had to be done with such intent - rehearsing as much as we could so Jason felt he was part of the band as opposed to a novelty. He was filling big shoes, and we needed all of that."