This is one of the most amazing things I've seen in a long time. Playwright Robert Wilson recorded the harmonious sound of crickets one night. With a little recording magic, he was then able to stretch out the sound they make "by as much as one would have to stretch the life of a cricket to equal that of a human." The result is something that sounds very much like an intentional orchestra. Bravo, mother nature!
Listen to the full recording here: https://soundcloud.com/acornavi/robert-wilson-crickets-audio