Music maketh the mood.

Last night whilst watching The Matrix again I was struck again with how much music, and other film audio, manipulates us and tells us what to expect and how to feel.

Here is a brilliant example of how a scene can be changed by the music used:

http://www.youtube.com/watch?v=B92Bd_a52fI

Particularly interesting is the 13th style, where it uses a big bombastic piece and the impact is initially huge.  http://youtu.be/B92Bd_a52fI?t=5m45s. But then, as they walk down the corridor the impact is lost and the viewer confused because none of the hard hitting stings seem to match the action.