Stephen Cox is not an imposing figure. Still, he has the countenance and features to be a Clark Kent look-alike, even if considerably smaller in stature.You remember Clark, right? He’s the guy who morphed quickly from his role as a reporter for a large metropolitan newspaper into Superman, the movie and comic book figure who flew around Gotham City beating the daylights out of the bad guys.Cox, now thirtysomething, even has eyewear like Kent’s. The distinguished San Antonio music educator appears to be much younger than his actual age, but he--like Kent--remains super cool in all circumstances, though never donning ...