Riot can afford to do whatever it wants with the content that surrounds League of Legends. In terms of raw numbers League of Legends is the largest game in the world. What's it like to create the music for something like that?
The company itself has released a free documentary about this process, because Riot, and the result is an interesting look at a part of League of Legends that is rarely discussed: The music.
It's a pretty interesting 45 minutes, so enjoy! When you're done, you can also download the 15-track Music of League of Legends album for free to enjoy the final product.