Animation Ideas for a Soundtrack

We were tasked with coming up with an idea to fit a pre existing soundtrack. We had three soundtracks to choose from, I chose the first one. My idea is that it's a battlefield set in the Han dynasty era. This era is chosen because of Guan Yu the Chinese God of War. The idea itself is a battlefield with sword fighting and it has Guan Yu riding through the battlefield much like he did in legend. The only problem with it really is that there is a lot on entail within it so I need to look into how to make that more manageable.