Bill Pirkle replies to me:

>And yet since its making is handed down from generation to generation, it
>tenets must be describable somehow.

Only the tenets of music that has already been written.  I suppose my
problem with the computer is that it surprises me only with difficulty.
I truly doubt that given one's knowledge of Brahms and Wagner, that one
could have predicted Mahler or Sibelius.

Steve Schwartz