We're no longer satisfied with flooding the air with sound from a public-address system. We insist upon something more luminous and transparent so that sounds will arise at any point in the space bringing about the surprises we encounter when we walk in the woods or down the city streets. Thus music is becoming a dance in its own right and has, of course, new notations. There is the possibility, in fact the fact, of its having no notation at all. (This is no reference to improvisation. As it was, it's still a question of fulfilling obligations.) What we took for truth was just a part of it, but one could have spent a lifetime stupefied!