I heard a recording of Eduardo Fernandez play this and I've tried to find the score (when I get it, it'll probably be a multi year project to learn for me). I don't know what the opus number is but the arrangement was by Leobet I think. I searched the web but the only piece I found " Granada" was not what I was after. Any help would be greatly appreciated.
You can find almost all the pieces on the web for free. Eythorsson.com has quite a lot of them, there is some on this forum, some on Dirk's Page and some on free/scores.com (with a hyphen instead of a slash).