You could say this is not a soundtrack score, and you'd be right. However this was recorded for a 1995 movie.
If you like the interpretation, try to find it, it's one of the most beautiful films I've ever seen.
There's a bonus: I've edited excerpts from the movie on the one piece of music that's not in it (CD2 track 9). Beware, if you don't know the story, it contains spoilers.