Aram Kachaturian, Gayane Ballet Suite (adagio)
Gustav Mahler's Symphony No. 5
I would have to go with this piece. Best is it if you play it quite loudly. To really feel the emotion of the music.
Amen to that. Pure genius.
And, if you're so inclined, you can enjoy it in the comfort of your own home:
Rob's is a more standard configuration for Hauptwerk.
Then there's what's possible if you really have the dough. Another home setup:
Not sure if I'm the one you wanted to reply to. Though I appreciate it. I'm not really into the organ music, though my father is.
Speaking of movie music,, how about,,,,, The Red Violin.
I've got so many favorites, it's hard to choose. I guess my tastes have moved backward in time to early music, but if we're talking classical music, I have to go with Mendelssohn's Scottish Symphony:
Oh, and thanks, John, for asking such an interesting question.