As mentioned in the forums here, Granado Espada has been rated as having the top 10 best MMO theme songs in The Perfect Ten: Best MMO Theme Songs Part 2. Since we are on the subject of music, I found a music score for Granado Espada a long time ago. I don't really remember where it came from, but you can download it (.pdf) from the link on the right hosted by MediaFire.
On the side note, I love Stones, the theme song for Ultima Online and the even older Ultima series. Here's a Chamber rendering of the same song from Ultima IX.