I had seen an interview with Hans Zimmer, who did the soundtrack for the film. He said he had chosen the Viennese waltz as the basis for his scoring of The Battle for the contradiction of civilization and savagery:
“I suddenly realised, as I listened to Ridley, with the battle raging outside the tent, that everything we hold dear, and which we find fascinating about Ancient Rome - all the architecture, all the literature, the poetry, the whole civilisation – was built on the blood and guts of the Legions and their victims.”
http://www.musicweb-international.com/film/zimmer.html
And of course the horses are lovely.
greys