Koolhaas is polite but seems eager to escape. After a cup of coffee, we excuse ourselves and begin to navigate our way through the hall’s cavernous rooms. Occasionally, he stops to draw my attention to an architectural feature: the moody ambience, for instance, of an auditorium clad in plywood and synthetic leather. When we reach the main concert space, a raw concrete shell, we stand there for a long while. Koolhaas sometimes seems to be a reluctant architect—someone who is unconcerned with conventional ideas of beauty—but he is a master of the craft, and I can’t help marveling at the intimacy of the space. The room is perfectly proportioned, so that even sitting at the back of the upper balcony you feel as though you were pressing up against the stage.