name of song

Yes, I am wondering this, also. the last song of the credits is "Prelude to Palestrina," which, in YouTube, has 3 parts. I tried listening through (skipping through) them, trying to find those exact first two minutes, but can't find it, so far. It seems like a very familiar song, yet I don't know what it is. There is a violin and piano playing. If anyone knows - please tell us!