Forum:KB:Subtler Imperial March?

Extreme apologies if this is in the wrong place, but I've been searching for something for a while and I seem to be out of options.

At several points in the movies/shows/etc there is a subtler version of the Imperial March, where it's less an overpowering theme and more just a hint that things are seriously going wrong.

However, no matter how much I search (I did use the page on the soundtracks) I can't find an audio file, or a title, or even where to purchase this version. Any ideas, anyone?

I appreciate the help. :)