Niccolò Castiglioni has been played on NTS in shows including Slime w/ Little, featured first on 5 March 2018. Songs played include Piano Sonatina In G Major (1952) and Nidi.

Niccolò Castiglioni (17 July 1932 – 7 September 1996) was an Italian composer, pianist, and writer on music.

Castiglioni was born and raised in Milan, where he began studying piano at the age of 7. He received his performer's diploma from the Milan Conservatory in 1952, and graduated there in composition in 1953. During the years 1958 to 1965 he taught at the Darmstadt Summer Courses. From 1966 to 1970 he taught composition as composer-in-residence at SUNY Buffalo (1966), visiting professor at the University of Michigan in Ann Arbor (1967), Regent Lecturer in composition at the University of California at San Diego (1968), and professor of the history of Renaissance music at the University of Washington in Seattle (1969-70). Following his return to Italy in 1970, he eventually resumed teaching composition at the conservatories of Trent (1976–7), Milan (1977–89), Como (1989–91) and Milan once again (1991–6). Among his many students are Alfio Fazio and Esa-Pekka Salonen.