J.S. Bach's great eighteen chorale preludes arranged according to difficulty

great eighteen chorale preludes arranged according to difficulty." DMA (Doctor of Musical Arts) thesis, de facto adviser of this essay, even though the topic is beyond his immediate interests, and even though the project was born before he joined the faculty at the University of Iowa. Thanks also to Katharina Malecki of Bärenreiter-Verlag for giving permission to use musical examples from their published scores. My first music teacher, Mrs. Ki Yang Kim, has been at my side through every spiritual, emotional, and artistic step of my life. Dr. Myung Cha Jo at Yonsei University has guided me through many important steps. Dr. Marilou Kratzenstein at the University of Northern Iowa encouraged my art, my heart, and my mind during my initial time in the United States. Dr. Brett Wolgast modeled the scholarly church musician in the finest tradition of J.S. Bach. Two people in particular have contributed more than I could have asked. Dr. Delbert Disselhorst's reputation as a brilliant scholar and performer is matched only by his dedication as a teacher and adviser of the highest order. I am grateful to have been nourished by a teacher who demonstrates that excellent musicianship emanates from excellent scholarship. His care has been meted out in copious comments, advice, and suggestions. Finally, Dr. Gayle Henrotte at Handong Global University has modeled love and grace as she fought a grueling battle to bring clarity and focus to my thoughts. Her eminence as a musicologist and linguist can hardly give a hint of her magnanimity, her iv warm smile, and her tenacious optimism. Without these two individuals, my work would never have come to fruition. Any quality in this essay is the trace of their hands. Personal thanks go to my loving and generous parents, Mr. Woo Geun Yoo and Mrs. Yoon Hee Koh, who made great sacrifices for my musical education while I was growing up in Seoul. My husband, Jeremy Knapp, sacrificed his time and energy by reading countless drafts and making suggestions for improvement. I was fortunate to marry someone who enjoys Bach as deeply as I do. My son, Peter Knapp, was so patient during my long absences. His cheer and joy sustained me during an otherwise arduous period, and his quiet, fascinated posture at the sound of an organ reminded me that this project was worthy of all the energy I could give. Thanks also to my husband's parents, …