what do you think about the concept "harmony"? Should it be a) controlled or b) an essentially random outcome of other, more important, musical factors?
The concept of harmony is something that I can not reply on a forum site very easily. However, I can best reply by saying it is something personal. The only composer I know of who didn't break the 'so called' rules of harmony is Palestrina. Inspired composers never follow rules; they create them. If composers don't create their own rules of harmony, they won't sound individual.
Is there some principle you can tell us about that (for you) determines the way the form of a piece develops?
The form of the piece is 'free flowing'. This is mainly due to time constraints. The music took three days to complete from start to finish. There was no time to organise the structure of the music; what was in my head went straight onto paper(usually hand written before computer copied).
Yes, it stands for West European Symphony Orchestra.