"Each of the albums has been remastered but it also has a companion disc with it," Page told Team Rock Radio's Nicky Horne Thursday night at the Classic Rock Awards in London.

"Let's take for example, 'Led Zeppelin III' - that's remastered from analogue from the original thing. I know everybody does that, but what they don't do.. I revisited all the working mixes that were done at the time."

"There's different versions," continued Page, "Say for example, there's 'Since I've Been Loving You' � there's an incredible version of that which is totally different, it's really raw in its approach, it's quite dramatic, it's cool."