Namazu, for Orchestra is a three-movement composition for orchestra and women’s chorus inspired by various mythological accounts for the cause of earthquakes. The dissertation consists of two parts: the composition in full score and an analysis of the composition. The first movement is based on the Japanese myth and namesake for this piece, Namazu. The second and third movements refer to Greek and Norse myths, respectively. The discussion document introduces the synopses of these three myths. Additionally, the document not only outlines pre-compositional processes, including the development of a systematic approach to modifying modes and constructing harmonies, but also examines their application in the work. Other musical elements such as rhythmic devices, themes and motives, and formal design are considered as well.