Going into the anechoic chamber at Harvard University, I expected to hear no sound at all, because it was a room made as silent as possible. But in that room I heard two sounds. And I was so surprised that I went to the engineer in charge … and said, There’s something wrong, there’re two sounds in that room, and he said describe them, and I did, one was high and one was low, and he said, the high one was my nervous system … and the low one was my blood circulating. So I realized that … I was making music unintentionally continuously.”