Interesting, well... in the sense maybe that wind chimes
are. (That's a serious comment, not one of my jokes.)
Yes, you're correct, Bill. Each time it is "played" (in this
case, it's "played" by a special software engine) -- it
would be quite different.
Let me take this apart a little, the way it works. Let's
look at one element: pitch.
One would create a list of acceptable pitches... that's
the input of the "composer". An algorithm (mathematical
formula) would randomly choose from the list of notes
which note to play at a given time. A stochastic (random)
element in the formula would also intervene, however,
deciding that maybe it would or maybe it would not play
the note at all when it was supposed to be played.
In addition to pitch, dynamics and duration would be
treated similarly... with the stochastic intervention
probabalistically deciding to use the "scheduled" value,
or maybe just pick a different one, randomly.
There's a little more going on in this piece; but that's
basically the layout... with three such formula groups
driving the piano, three driving percussion, one driving
vibes, another bells, another strings, and so on.
As you see, certain factors are deterministic, fixed,
derived from lists and processed by an unchanging
mathematical formula. But other factors are entirely
up to chance... or as close as you come to "chance"
on a computer, in that "random number generators"
on computers are really only pseudo-random.
Now. Is this "composition"? You can argue both sides
of the line, I guess. One could posit that the "composer"
makes key decisions about notes and durations and
dynamics and writes the formulae that process them;
and that the result reflects the thinking and the
sensibilities of the "writer".
But to me? It seems more like software engineering.
Regardless, I'll probably do a few more of these, in that
the results -- while unlikely to supplant Beethoven and
Mozart -- can be intriguing... and occasionally even
listenable!
My best,
David
www.DavidSosnowski.com




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