I know! John Williams is amazing. You can hear that it is the Emperor's theme, but it's mixed with the passion of Luke's theme and grows more and more...what is the word I'm looking for?
It's like almost as if you were there witnessing the battle it would be as if you were standing below in some valley and you look up at these two black figures fighting above on the hill. Your neck is craned up and your jaw open, and as you witness this father and son pair swinging to kill each other, your eyes well up with tears.

I don't think that there is a word for that.