The theme that plays... Okay, it plays twice near the end of the game in very important moments. That happens to be my favorite piece of video game music, period. If I were to die soon, I’d want it played at my funeral, seriously. It starts with piano and flute and crescendos into an epic fanfare with an awesome brass countermelody, built around a recurring theme throughout the game’s music. I can’t describe it other than musically without major spoilers.