of Göttingen and finally gave up her post at the CNRS. The new University Act of the State of Lower Saxony enabled her to be director of Musicology in Göttingen for some time. In 1977, she held summer courses on Verdi research at Northwestern University at Evanston, Illinois. In 1992, she retired and lived in Ahrensburg near Hamburg, where she died either on 20 November or 21 November 2006. Influence Ursula Günther coined the term which classified the music of the late fourteenth century to describe the subtle rhythm reflected in the music of the time. Another field of research was the work of Giuseppe Verdi. She published his opera Don Carlos in an issue with the five-act French original version and also with the four-act Italian version. She published widely, becoming one of the most influential musicologists of the twentieth century. Writings Fourteenth-century music "Der musikalische Stilwandel der französischen Liedkunst in der zweiten Hälfte des 14. Jahrhunderts: dargestellt an Virelais, Balladen und Rondeaux von Machaut sowie datierbaren Kantilenensätzen seiner Zeitgenossen und direkten Nachfolger". PhD Diss. Hamburg: University of Hamburg, 1957. 286 pages. University document: Hamburg, defended in the Faculty of Philosophy on 7 December 1957 (not available for circulation). Ursula Günther (ed.): Zehn datierbare Kompositionen der Ars nova. Schriftenreihe des Musikwissenschaftlichen Instituts der Universität Hamburg 2. Hamburg: Musikwissenschaftliches Institut der Universität Hamburg, 1959. Ursula Günther: "Das Ende der Ars Nova". Die Musikforschung 16 (1963), pp. 105–120. Ursula Günther: "Zur Biographie einiger Komponisten der Ars Subtilior". Archiv für Musikwissenschaft 21 (1964), . Ursula Günther (ed.): The Motets of the Manuscripts Chantilly, Musée Condé, 564 (olim 1047) and Modena, Biblioteca Estense, α M. 5,24 (olim lat. 568). Corpus Mensurabilis Musicae 39. [n.p.]: American Institute of Musicology, 1965. Ursula Günther und Ludwig Finscher (eds.): "Aspects of Music in Church, Court, and Town from the 13th to the 15th Century". Musica Disciplina 38 (1984) [includes her essay "Unusual Phenomena in the Transmission of Late 14th Century Polyphonic Music", ]. Ursula Günther und Ludwig Fischer (eds.): "1380-1420: An International Style?". Musica Disciplina 41 (1987) [includes an article with John Nádas und John Stinson, "Magister Dominus Paulus Abbas de Florentia: New Documentary Evidence", pp. 203-246] Ursula Günther and Ludwig Fischer (eds.): Musik und Text in der Mehrstimmigkeit des 14. und 15. Jahrhunderts. Kassel: Bärenreiter, 1984. . Ursula Günther: "Die Ars subtilior". Hamburger Jahrbuch für Musikwissenschaft 11 (1991), pp. 277–288.The Cypriot-French Repertory of the Manuscript Torino