"With the Enlightenment, man now asks questions that have no certain answer: research becomes the very condition of being human. This is the modern form of scientific logic: the time of science, therefore, coincides with what we might call the “interrogative structure” of music; with a musical time that, from Debussy to Schönberg to Berg to Bussotti, moves further and further away from the concept of [[w:duration|duration, of beginning and end, and seeks “continuity” in “space”, moving from the fading of sound to the fading of tonality. In fact, in the same year that Einstein published his “Memoir on Relativity” – 1905 – Schönberg's symphonic poem Pelleas und Melisande was performed for the first time and greeted with boos, marking a milestone in the search for “spatial” music."