1. Thanks are due to the late Konrad Boehmer, for sharing memories and documents from the premiere of Voci destroying muros; to Paola Merli, for suggesting invaluable reading on Gramsci and assisting with a number of translations; to Carola Nielinger-Vakil, for offering expert comments on a draft; to Zoltán Dörnyei and Esperanza Rodriguez-Garcia for helping with translations; and to the anonymous readers for this Journal. I am indebted to the Archivio Luigi Nono and the Nederlands Instituut voor Beeld en Geluid for access to archival materials. My thanks also to Maarten Beirens and Jochem Valkenburg for inviting me to speak at the Holland Festival Nono symposium in June 2014, thus providing the starting point for this project.
2. Nono remarked on the “boycott” by international institutions in “A colloquio con Luigi Nono” (1970), 90–91.
3. Although mentioned in passing in key Nono texts, Voci destroying muros has only received detailed examination in an unpublished conference paper; see Pasticci, “Dinamiche dell'invenzione formale.” This paper focused upon the work's treatment of revolutionary songs.
4. Manzoni, “Towards Political and Musical Renewal,” 25–26.
5. Iddon, New Music at Darmstadt. Nono attended every Darmstadt festival between 1950 and 1959.