Twitter Fam, I need your help.

You're riding acoss the barren plain, your trusty steed between your thighs, your sword raised high, a thousand faithful warriors surging behind, the countless enemy hoard ahead.

You get one song to play while charging into battle.

What is it?

This is for the final boss battle in my WIP which actually has no horses, swords, or armies, but has a similar feel.