My new system of air-conditioning, then. It's easy, once you know all about the hot air that has to be conditioned. Thereafter, it's a matter of using a filter with the right devices, two of them. But first let me start right in the middle—of my last article, that is. David Simmons, it will be remembered, made the contemporary composer ask, ‘How in this age of ubiquitous noise, violence, change and conformist pressures can I maintain and express my intuitions?’ In the last issue, I dealt with this question logically. Now, I propose to examine it psychologically.