Battle of Wills

      The song "Empire of Our Own" by RAIGN seems like a good summary of the showdown between Brutus and Antony's armies. The final two acts of the play show Cassius and Brutus trying to defend their actions against the people, and Brutus especially was adamant that what he did was for 'all of Rome' - to free the people from tyranny, though none of their reasons matter as the battle draws near. Therefore, these two parts of the songs seemed particularly reminiscent of what's happening: "Our minds are full of freedom...when love becomes the reason, we fly with kings tonight and come down with an empire of our own," and "Our glory days are numbered."

(Important lyrics start at 50 seconds)

https://www.youtube.com/watch?v=mwP0BquR_C8