found: His Tonal stratification and conflict in the music of Benjamin Britten, 1993:t.p. (Philip Ernst Rupprecht)
found: Britten's musical language, 2001:CIP galley (Philip Rupprecht is Assistant Professor at Brooklyn College and the Graduate Center, City University of New York; b. Oct. 23, 1966)
found: Rethinking Britten, 2013:ECIP data view (PHILIP RUPPRECHT is Associate Professor of Music at Duke University. He is the author of Britten's Musical Language (Cambridge) and co-editor of Tonality 1900-1950 : Concept and Practice (Steiner, 2012).)