Performance envy

I found this Guardian piece on David Cope's efforts to use a computer to compose classical music rather fascinating. So much more effective than...I think her name was Rosemary Brown, who claimed to channel dead composers and create new works.

But I am baffled why no one mentions or even, apparently, talked to performers, who are best placed to judge whether a particular piece of music has - or can have - "soul" or "heart" - that is, whether it can be used to communicate emotion. Asking a music critic seems to me only half the game, since the critic is judging the performance as well as the music.

wg