Finally got to listen to this...  I really like the way the texture changes a lot, along with the key changes.
 
I've thought at times that I'd like to write a symphony, but I can't imagine how much time it would take.  Congrats on making progress!

wow - I wouldn't know where to start. Excellent composition Jerry

this is incredible! 
 
that triangle sounded just a tad too loud and too up front in the mix (there's no time reference on your player, so I can't tell you when, but it's not long into the piece - just before the tubas/flugelhorns come in).
 
that's pretty darn minor compared to the whole piece which is just awesome!