PN: We talked about fractals in connexion with the
infinity row–this way of letting music grow in what
you could call open hierarchic layers. It's not a
director and a slave; it's an interdependent way of
producing music. If you choose a scale — for
instance, the chromatic scale — it contains itself
an infinite number of times; my Second Symphony is
based on realizing this characteristic. But if
instead of letting it move in this expansive way,
where you get wider and wider waves, you then
construct it in the opposite way, you get a figure
where it never gets out of itself. But it creates
still a fractal rhythmic figure, which was very
inspiring for me in all my percussion music from the
1970s. I discovered that feature in the beginning of
the 70s when I composed the Third Symphony. I found
the infinity row at the end of the 50s, but it was
not until I had composed the Third Symphony and some
works before it that I realized it contained its
dark side, which is just as rhythmic and just as
hierarchic. In my Third Symphony it comes out like
an inevitable development. If you imagine the place
in the beginning where it gets up to a very high
trill, it comes in lower at half-tempo, and then
again more slowly further down. It contains itself,
like a Russian doll or a Chinese box.