During this talk, Ken will introduce 2 different topics: one is brain cognitive solution to Arnold Schoenberg’s classical question on the “Sprechgesang” and Pierre Boulez’ additional point concerning speech, singing voice, and timbre. The other topic is a system of conducting he has devised with Pierre Boulez from 2004 to 07 in Luzerne. With the use of marker-less motion capture they integrated a system of conducting without “FIGURE”: Angular dynamics. As he will visit IRCAM with his collaborator, the poet-film director Frank Diamand, Ken Ito will also talk about their collaboration. Frank is a survivor from the Bergen Belsen concentration camp and all my music making is closely related to the ethics of music after the WW2.