Yes. It was the iconic EU2 music: a bunch of Swedes trying to sing old castilan (or was it catalan?). Known to cause severe mental instability after only a few hours of listening, the one thing people remember above all else is the memorable lyrics of the refrain, "falalalalalan".
EDIT: For those needing a refresher, here's a link to the music.
Man, I used to play EU2 long ago. I was just a kid back then... I think I really liked playing the tutorial, or the Mayans or something. Both, maybe.