“All along the Broadway are shows about the miracle of shows, from “The Producers” (about a pair of feckless producers) to ’42nd Street’ (about some gutsy dancers), to the current revival of the classic musical ‘Gypsy’ (about vaudeville, stage mothers and the historical efficacy of gimmicks). While ‘Cabaret’ and ‘Chicago’ aren’t specifically about Broadway, they both celebrate the seedy glamour of song and dance. All this self-awareness does raise the question of whether the audience, a good percentage of which probably consists of tourists, are as entranced by show themes as show people are.”