One of my favorite songs from IX was always Vamo'alla Flamenco so when I heard it in the Dancer questline I was ecstatic. That's permanently on in my FC house. A Long Fall as well, since I ran that dungeon 17 times over two days to get that roll. I also like Possessed by Disease from the Nier raids and Metal - Brute Justice Mode.

I love To The Edge, just don't have the roll yet.