“Dark Side Of The Moon is a great album, but The Wall is progressive music in a different fashion. It’s not filled with crazy song arrangements and odd-time signatures; rather, it tells a really, really complicated and deep story through music and lyrics. Somehow, they were able to tie it all together.

“It’s like a big idea that just keeps going. It wasn’t just that that you had conceptual songs, and it wasn’t just that you had a conceptual album even. With The Wall, it’s everything: the album, the songs, the lyrics, the tour, the movie – it all relates to one story.

“And, of course, there’s David Gilmour – such a brilliant bluesy guitar player with a complete grasp on how to use his instrument to express melody.”