Can you help me find a song?

So in this link right here, (http://www.youtube.com/watch?v=6K-TDdbrLTk) there’s this interview with Lucy Lawless and Renee O’Connor from the movie Bitch Slap.
Now there’s this really awesome music playing in the background, which is also played in the movie Excalibur (1981) during a wedding scene.
http://www.youtube.com/watch?v=3yj2J9a7ujs
I mean does this song have a name? All I can find is like a one minute track from the movie, (Linked above.) but this is obviously something that someone composed. Any ideas? Who came up with this, what’s it called, where can I find a version?

Yeah I love Xena, katanas and Camelot as much as the next nerd, but this is pissing me off lol. Any help with this song?