My friend and I ride two horses that aare opposite colors (mines white (techinically grey) and hers is black). We have been talking about doing a sort of Pau de Deux/ Musical Freestyle together (just as a demo thing), and have a neet theme picked out: It's sort of "Good vs. Evil"; Me and my grey are the good, "angelic" pair and my friend and her horse are the evil, "devilish" pair (I would wear like gold clothing, etc., and she and her horse would wear red things. My horse and I will have nice, flowing movements, and hers will be more drastic and sharp, etc.). But, we were trying to pick a song that has a mix of both slow, sweet, almost orchestra music, as well as some jarring, loud, almost "metal" music. Any suggestions?