I had never seen this installation, called echo, by Susie MacMurray, a British artist. It was done in 2006 at York St. Mary's Cathedral, and is compose of 10,000 hairnets containing used violin bowstrings. All kinds of symbolism here. Check out the show catalogue here. You can also see more of this artist's drawings and other work at her website, here. Just to tempt you, here are a few more images of her work.