A wall of white bricks, mortar lines drawn in pale blue, stretches edge to edge with the cool indifference of graph paper. There is nothing to land on: no faces, no band, no horizon. That emptiness is the point. For the original sleeve of The Wall, that was the entire image, a barrier, blank and unbroken, daring you to wonder what it was keeping out or in.

The red lettering scrawled across the center carries the only heat on the whole cover. PINK FLOYD sits high, THE WALL sits below it, hand-drawn like graffiti rather than a tidy logo, the single mark of a human hand on an otherwise impassive surface. It reads less like a title than a warning left on someone else's property.

But the blank front is only the surface. Behind it, a cartoonist's grotesques were already massing, and the story of how they got there is stranger than the plain wall lets on.