Chapters One and Two establish the context for this study by providing an overview of Orff's work in Munich at the Guntherschule as well as the nature of music education in Canada when Doreen Hall began her work. Chapters 2--5 review and analyze the significance of the many events and initiatives Doreen Hall was involved with in order to establish Orff---Schulwerk in Canada.Historical data from primary sources and published books and articles serve as the basis for this study of Doreen Hall's remarkable career in music education. During the period of 1954 to 1986 Hall worked tirelessly in order to introduce the ideas of Carl Orff into music education in Canada and the United States. This study attempts to provide an overview of the main events and initiatives Hall was involved in that led to the acceptance of Orff---Schulwerk (the name given to Orff's philosophy of music education and those techniques that defined it) in North America. This study also attempts to understand the meaning of Hall's work for music education in the public schools of Canada. Even though the focus is on the significance of her work for music education in Canada, key events that she was involved in that influenced the acceptance of Orff---Schulwerk in the United States will also be touched upon.This study will be of interest to historians of music education as well as those who are interested in the development of Orff---Schulwerk in North America from 1955 to 1986.