An album which is extremely well-known largely on the back of its concept, Pink Floyd's eleventh LP (they weren't shy of the studio back in the day, were they?) deals with the themes of isolation and distress incurred by disaffection. Perhaps just as celebrated for the theatrical live tour which followed its release, The Wall is a piece-by-piece construction and eventual deconstruction of...a wall. The themes' central protagonist, Pink, is said to be based on Roger Waters himself; a young man who undergoes various hardships throughout his life, closing himself off to the world gradually behind a gigantic wall, it's all rather symbolic. I'd fill you in with the rest, but you'd have a lot more fun checking it out for yourself. Easily the most concept-heavy album on this list.