Optional, In-Game, Themed Background Music

Riot, you have a thing for creating some of the best log in screen music and various other songs and music that just make me want to listen to them for years on end. I was wondering if you could add extra background music for champions that have their own themes and such. People get a lot more pumped up and are filled with a lot more motivation when they can hear epic battle music and such flowing into their ears, so I was wondering if this could be done.