Castaldi's works were frequently broadcast on radio and played in public. He simultaneously taught at conservatories in Milan and Parma. His primary publishers were Casa Ricordi and Suvini Zerboni. His style often adopted artificial and grotesque mechanisms,[1] as he used landscapes, buildings, and castles in the scenography of his notes.[2][3] Musicologist Renzo Cresti [it] wrote that "despite having attended the Ferienkurse he has always placed himself outside the constructivist tendency, indeed, he laughs at it; he takes materials taken from works of the past and subjects them to an ironic collage which de-subjectivizes the work; through the cyclical fixity of the iterations of these materials, the original meaning is emptied. Lead composer, Castaldi plays iconoclastic games that reject the concept of novelty, the sound elements are objects that are recycled, between nostalgia for the past and the desire to make a scandal."[4]
Castaldi died in Milan on 22 February 2021 at the age of 90.[5]
^Sadie, Stanley (1994). The Grove Concise Dictionary of Music. Oxford: Oxford University Press. ISBN978-0333432365.
^Dorfles, Gillo (2006). L'intervallo perduto (in Italian). Milan: Skira editore.
^Torelli Landini, Enrica (2012). Grafia musicale e segno pittorico nell'avanguardia italiana (1950-1970) (in Italian). Milan: De Luca Editori d'Arte. ISBN978-8865571125.
^Cresti, Renzo (2015). Ragioni e sentimenti nelle musiche europee dall'inizio del Novecento a oggi (in Italian). Lucca: Libreria Musicale Italiana. ISBN9788870968347.
