Information: - Robert Judd currently serves as the executive director of the American Musicological Society , a position he took up in September 1996 . He received his musicology doctorate ( D.Phil. , University of Oxford ) in 1989 , with the thesis The Use of Notational Formats at the Keyboard ( UMI 9018544 ) . - Carl Engel (July 21, 1883 May 6, 1944) was a French-born American pianist, musicologist and publisher from Paris. He was also a writer on music for The Musical Quarterly, and chief of the Music Division of the Library of Congress. - An executive director is a chief executive officer (CEO) or managing director of an organization, company, or corporation. The title is widely used in North American non-profit organizations, though many United States nonprofits have adopted the title president or CEO. - Joseph Moiseyevich Schillinger (Russian: , 1 September 1895 23 March 1943) was a composer, music theorist, and composition teacher who originated the Schillinger System of Musical Composition. He was born in Kharkiv, in the Kharkov Governorate of the Russian Empire (present-day Ukraine) and died in New York City. - The American Musicological Society is a membership-based musicological organization founded in 1934 to advance scholarly research in the various fields of music as a branch of learning and scholarship; it grew out of a small contingent of the Music Teachers National Association and, more directly, the New York Musicological Society (19301934). Its founders were George S. Dickinson, Carl Engel, Gustave Reese, Helen Heffron Roberts, Joseph Schillinger, Charles Seeger, Harold Spivacke, Oliver Strunk, and Joseph Yasser; its first president was Otto Kinkeldey, the first American to receive an appointment as professor of musicology (Cornell University, 1930). - Music Teachers National Association (MTNA) is an American nonprofit professional organization for the support, growth, and development of music-teaching professionals, with some 22,000 members in 50 states, and over 500 local affiliates. MTNA offers a wide range of member resources, from leadership, teaching and personal health support, to insurance, financial and legal services. It also comprises two subsidiaries, the MTNA Professional Certification Program, and the MTNA Foundation Fund, which supports a variety of programs that include music competitions and commissioning of composers. MTNA was founded in 1876, and is registered as a 501(c)(3) organization in Ohio, with headquarters located in Cincinnati. - Charles Louis Seeger, Jr. (December 14, 1886 February 7, 1979) was an American musicologist, composer, and teacher. He was the father of the American folk singers Pete Seeger (19192014), Peggy Seeger (b. 1935), and Mike Seeger (1933-2009). - Otto Kinkeldey (November 27, 1878 September 19, 1966) was an American music librarian and musicologist. He was the first president of the American Musicological Society and held the first chair in musicology at any American university. - A chief executive officer (CEO) describes the position of the most senior corporate officer, executive, leader or administrator in charge of managing an organization. CEOs lead a range of organizations, including public and private corporations, non-profit organizations and even some government organizations (e.g., Crown corporations). The CEO of a corporation or company typically reports to the board of directors and is charged with maximizing the value of the entity, which may include maximizing the share price, market share, revenues, or another element. In the non-profit and government sector, CEOs typically aim at achieving outcomes related to the organization's mission, such as reducing poverty, increasing literacy, etc. Titles also often given to the holder of CEO position include president, chief executive (CE) and managing director (MD). - A president is the leader of a country or a division or part of a country, typically a republic, a democracy, or a dictatorship. The title "president" is sometimes used by extension for leaders of other groups, including corporate entities and social groups. - Gustave Reese (November 29, 1899 September 7, 1977) was an American musicologist and teacher. Reese is known mainly for his work on medieval and Renaissance music, particularly with his two publications "Music in the Middle Ages" (1940) and "Music in the Renaissance" (1954); these two books remain the standard reference works for these two eras, with complete and precise bibliographical material, allowing for almost every piece of music mentioned to be traced back to a primary source. - A corporation is a company or group of people authorized to act as a single entity (legally a person) and recognized as such in law. Early incorporated entities were established by charter (i.e. by an "ad hoc" act granted by a monarch or passed by a parliament or legislature). Most jurisdictions now allow the creation of new corporations through registration. - Cornell University is an American private Ivy League and federal land-grant doctoral university located in Ithaca, New York. Founded in 1865 by Ezra Cornell and Andrew Dickson White, the university was intended to teach and make contributions in all fields of knowledgefrom the classics to the sciences, and from the theoretical to the applied. These ideals, unconventional for the time, are captured in Cornell's motto, a popular 1865 Ezra Cornell quotation: "I would found an institution where any person can find instruction in any study." What entity does 'robert judd' has the relation 'occupation' with?
A:
musicologist