What's your favourite film score?
I'm sure this has been done before.
That said, I sat down to watch Once Upon a Time in the West last night for the first time in years. I'd forgotten how wonderful the score is, though that perhaps has something to do with shots of Claudia Cardinale during its most sweeping moments.
Scorsese style pop compilations are not under consideration here. Only orchestral or electronic scores composed specifically for a film.