Metamorphosis is based on the 1939 work of that name by world-renowned Dutch graphic artist, MC Escher. Just as Escher's monumental graphic delights it's viewers with it's imaginative shape-shifting, Donnelly's composition takes the listener on a fascinating journey through a musical landscape that changes subtly and seamlessly. I was intrigued by his idea that things are more related than we think they are, and by his explorations of concepts like infinity and recursive structures. Escher has a key role in the book, and one of his works included was Metamorphosis.