The Study of Medieval Chant: Paths and Bridges, East and West. In Honor of Kenneth Levy

Peter Jeffery with David G Hughes, Nicolas Schidlovsky, Michel Huglo, Keith Falconer, James W McKinnon, Margot E. Fassler, Alejandro Planchart, Dimitrije Stefanović, Milos Velimirovic, Charles M Atkinson, Jorgen Raasted, Ruth Steiner