It would be hard to improve on the description of The Wall offered by the editor of Uncut recently in his “Stop Me If You’ve Heard This One Before” column. “An impossibly miserable psychodrama, four sides of groaning self-pity, morbid pessimism and relentless musical hogwash, “Allan Jones wrote in describing Pink Floyd’s original 1979 studio recording. And nothing had improved when Waters performed the work live at the Berlin Wall on July 21, 1990. Even the galaxy of estimable guest singers, including Van Morrison, Sin