These abstracts by Angelina Gualdoni just blow me away. See more here. She is American, living in Brooklyn. The softness and the color-sense are what I like the most. If you look at all her work on the website you will see some quite different representational work as well.
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.