James Webster is Goldwin Smith Professor of Music at Cornell University. He has written on many aspects of Haydn's works as well as on Beethoven's chamber music, Schubert, opera buffa, and Brahms. His writings include Haydn's 'Farewell' and the Idea of Classical Style (1991). Georg Feder was director of the Joseph-Haydn-Institute in Cologne from 1960 until his retirement in 1990.