Tokyo. “Star Sound: Astronomy and Music in the Works of Karlheinz Stockhausen” is the title of the conference held by the composer and sound designer, Massimiliano Viel on September 23rd at the Italian Institute of Culture of Tokyo. The conference will explore the relationship between music, sound, and outer space. The first part of the conference will illustrate the possible aesthetic and technical relation of music with scientific data collected through observation of the cosmos. The second part will analyse how the German composer Karlheinz Stockhausen envisioned and realised this relation in works such as Tierkreis (Zodiac), Sternklang (Sound of Stars), and Sirius. (9colonne)