Jimmy Page has been speaking to Team Rock Radio about his recollections of the Led Zeppelin reunion concert that took place at the O2 Arena in London in 2007. As Page notes, the experience was one that featured the band’s characteristic spontaneity: "The thing about that concert was that we didn't have any warm up gigs for it. We rehearsed it at sound rehearsals ... I mean, over a period of time, we didn't just do it in an afternoon. But that was it, our one chance. And going out there to the O2; it was a big audience, a big cavernous place. So we went in there and kicked it off. We’d played enough between ourselves and with Jason (Bonham), John Paul Jones and myself that we really felt like a unit. We could sort of mutate the numbers and change things on the night. It wasn't all note for note, perfect stuff because that wouldn't have been Led Zeppelin. There was always that area of the unknown, the improvisation of it." The guitarist also noted a particular fondness for the band's rendition of "Kashmir" that night: "How did it go? I knew what the set was and I tried to just do it really well. I think we really did. I mean, there were moments which were quite chilling on the stage ... when we did 'Kashmir,' you could just feel the energy. There had been quite a bit of energy early on, but it just felt like something else."