That just made my day! I just started playing Arkham City first time, and I was right! Both Ra's al Ghul and his daughter are in the game! (sorry for saying his name wrong in the vid- I had no idea)
Just curious...how long had you been working on the piece? It sounds very nice, but I wonder if you could memorize it. You have a very nice sound, and I would like to see facial expressions to go with it. (I've noticed it's sort of difficult to produce facial movement when holding the music.) Very good work.