“I consider this to be a prog album. When you listen to what they did with tracks like Help and when you hear what Jon Lord did with the Leslie… that’s prog. Taking something and making it into a different animal; taking a piece like Help and shaping it into something completely different to how it was.
“They did it with some of the other tracks on the album too, which they could do with Jon and Richie [Blackmore] being such phenomenal players and Ian [Paice] being a drummer in the mould of Bill Bruford - I consider them both to be technically brilliant drummers. I know they moved slightly more towards rock afterwards but Shades was a truly pivotal album.”