William E. Hettrick is Professor Emeritus of Music, Hofstra University. His critical editions of choral works by Johann Herbeck have been published by A-R Editions, Inc. (2008–2015). His edition of Herbeck's Mass in E Minor is in production. His article on the autobiography of Adalbert Gyrowetz appeared in Studien zur Musikwissenschaft (1991), and his translation and study of the Musica instrumentalis deudsch of Martin Agricola was published by Cambridge University Press (1994). Other articles, appearing in the Journal of the American Musical Instrument Society, have concerned the ruszpfeif of Virdung and Agricola (1991) and historical aspects of piano manufacturing and journalism in America (2000, 2004, and 2010), including ‘The American Piano-Supply Industry in the Nineteenth Century, with Particular Attention to the Career and Manufacturing Methods of Joseph P. Hale’ (2017 and 2018).

Paul Hopwood is an adjunct lecturer at the Western Australian Academy of Performing Arts, Edith Cowan University. His work to date has been centred on English music of the early twentieth century, having completed his doctoral studies on the music of Frank Bridge, and contributed to a volume on the music of Joseph Holbrooke. Other research interests include the phenomenology of music, and postmodernism in music theory and analysis. Paul works as a barrister and solicitor, principally in the field of maritime and admiralty law.

Mark Burford is Associate Professor of Music at Reed College in Portland, Oregon, where he is also chair of the American Studies program. His research and teaching focuses on twentieth-century popular music in the United States, with particular focus on African American music, and late eighteenth- and nineteenth-century Austro-German concert music. His scholarship has appeared in numerous journals and edited collections. His article “Sam Cooke as Pop Album Artist—A Reinvention in Three Songs” received the Society for American Music's 2012 Irving Lowens Award for the outstanding article on American music. He is the author of Mahalia Jackson and the Black Gospel Field, released last fall by Oxford University Press, and editor of the forthcoming Mahalia Jackson Reader, an anthology of writings on Jackson that he is editing for Oxford's Readers on American Musicians series.