On the subject of Kefka: "Dancing Mad", Kefka's final boss theme for which Laughing Mad was named. Not so much that the song wasn't meant to be, but how much there ended up being of it, was a complete throw-in by Uematsu, as revealed here:
Well, usually when you make a song it's two to three minutes in length, you have the introduction, the main part and the ending. But... for 'Dancing Mad' I didn't really put a stop on it, so I kept on working on it, working on it, working on it and that really let the song... you know... I got to play around with it for something like fourteen minutes, and it's really one of my favorites.