I don't know. Honestly, I don't think that there are many mainstream songs that would quite capture the feel of the game, especially since so many songs usually focus on only one emotion at a time.
What could be cool would be if they had a song custom created for the game. Something that captured the feel perfectly. They could even have a different song for (what I'm assuming will be) 3 different endings: dark/bad, neutral, and light/good. (Should have read the other posts first, hehe. Kind of like what zgamer said!)
But I would rather their time, money, and efforts go into game play

I'm already looking forward to Season 2 (assuming there will be one).