This book is the oral history of Fan Zuyin, a renowned music scholar, compositional theorist, and music educator. As an important witness and active participant in the development of contemporary Chinese music, Mr. Fan holds significant academic influence within China’s contemporary music community. Based on oral accounts of Mr. Fan and compiled by his students, this book covers eight key aspects, including his personal life, fieldwork practices, harmony teaching, harmony research, music composition, compilation of collections and intangible cultural heritage protection, editorial work for journals, and music education philosophy. It reflects Mr. Fan’s life attitude, scholarly spirit, and academic contributions to China’s music theory system. It provides the academic community with a “social memory” and “living history” for developing contemporary Chinese music.