I was mistaken about the closing credits song. It does have words but my soundcard was giving me troubles earlier so I couldn't hear clearly. As luck would have it, now that the soundcard is working properly, I have a noisy clothes dryer running nearby, so I still can't make out all the words. One part, near the crescendo of the demo/menu version of the song, goes like this:

"Be brave, be strong, be true..."

Another bit laments (paraphrasing here):

"We didn't know the cost the fight would bring"

I'm curious now about all the lyrics for that song.

After a few more listens, I have to correct my impression when I said it sounded much like Enya. After watching the animated silhouettes fighting in the background during the song/credits, I had the feeling of watching the opening credits of a James Bond movie (without the female silhouettes). I realize that probably doesn't sound very good in your mind for a TW game, but it works for me. I can't put my finger on a particular James Bond song, but it is not like any of the more famous ones (Goldfinger, Live and Let Die, etc.). It is a very nice song and Angela van Dyck has a great voice for it.