Thomas DeLio is a composer and theorist of international renown in both fields and especially noted for his work in computer music. In this conversation he discusses his musical thinking with over 40 years in the field. His compositions have been performed worldwide and are recorded on numerous labels. Neuma recordings has recently released five volumes of his recorded compositions in an ongoing series of his collected works. The interview itself, conducted over a series of phone conversations in the summer of 2020, begins with a look at his early student years at the New England Conservatory of Music in the late 1960s and early 1970s and navigates through to his current work and thinking today. Numerous aspects of his compositional approach and aesthetics are discussed, including his early influences, his illuminating thoughts on time and silence in his music, his applications of various technologies, and spatial projection, particularly at it relates to his work with sound installations.