Abstract
The essay aims to provide a comprehensive survey of the theoretical and aesthetic interpretation of Claude Debussy's musical work by Vladimir Jankélévitch, while simultaneously delineating how and why the phenomenon of Debussysm emerges as an innovative and revolutionary style, if compared to the previous tradition. The text discusses the potential relationships between philosophical Phenomenology and musical Impressionism, highlighting - also through the concepts of mystery and instantaneity - how the philosopher reads in the composer's music the emergence of a vision of reality centered on the punctuativity of events.