A breathtaking subject! My eggshell artwork is featured on the cover of this music study book, written by musician and composer Christoph Enzel (Berlin, Germany). This book is intended for saxophone players who want to learn circular breathing. In addition to practical instructions, the book also contains a number of compositions to practice with. I do not play the saxophone, but I do play piano, as an amateur. Music is an important part of expression for me. It is therefore a confirmation that my art proves to be a source of inspiration for musicians. I made the H-spiral out of 321 eggshell pieces devided over 6 spiral arms, starting from the center towards an imaginary infinity.