Ah, while we're talking about Star Wars soundtrack, there's something bothering me that you're certainly able to help me with.
You all know the Imperial March, right? It is heavy, pompous, opressive. When you hear it, you see the endless ranks of marching stormtroopers.
But I seem to recall a Rebel equivalent. It is also a march-like tune, but it's all the Imperial one is not. It sounds more hasty, less momentum, more ambiguous or flexible. Sort of gives a vision of guerilla groups. My problem is that I simply can't remember where in the movies it appears, nor whether it is a part of any official soundtrack collection.