Björn Heile is Professor of Music (post-1900) at the University of Glasgow. He is the author of The Music of Mauricio Kagel (Ashgate, 2006), the editor of The Modernist Legacy: Essays on New Music (Ashgate, 2009), co-editor (with Martin Iddon) of Mauricio Kagel bei den Darmstädter Ferienkursen für Neue Musik: Eine Dokumentation (2009) and co-editor (with Peter Elsdon and Jenny Doctor) of Watching Jazz: Encountering Jazz Performance on Screen (2016), plus many other publications on new music, experimental music theatre and jazz. Among other projects, he is trying to write a book on the global history of musical modernism. Charles Wilson was Senior Editor for twentieth-century composers on the second edition of the New Grove Dictionary of Music and Musicians, and currently lectures at the School of Music, Cardiff University. He served as Editor-in-Chief (2009–12) of the journal Twentieth-Century Music. His research focuses on the relationship between historiography and practice (both personal and institutional) in the art music of the twentieth and twenty-first centuries.