Svetlana Kujumdzieva, Dr. of Sciences, is Professor of Medieval Music at the National Musical Academy ""Prof. Pancho Vladigerov"" and Theological Faculty of the Sofia State University ""St. Clement of Ohrid""; academician at the Bulgarian Academy of Sciences. She has published 12 monographs and more than 150 articles in Bulgaria, Austria, Denmark, Finland, France, Germany, USA, etc. Kujumdzieva was an associate member of the John W. Kluge Center at the Library of Congress in Washington, D.C., the Resource Center for Medieval Slavic Studies at the Ohio State University in Columbus, OH, St. John's College, Oxford, GB, etc. She is a member of many national and international scientific organizations.