Theater: Seeking Salvation for the Capeman

On a hot July afternoon, Paul Simon was fiddling with dials on a control panel in a cramped recording studio in midtown Manhattan. With most of his hair gone and his plump face inching toward jowly, the pop troubadour, 56, has reached unmistakable middle age. But the mellow, yearning voice coming through the sound system has changed little: "I was born in Puerto Rico/ Came here when I was a child..." Simon was preparing the mix for a song from The Capeman, his new musical that recounts a bloody tabloid crime from the 1950s, explores questions of guilt and redemption and...