I have time to lose, so why not...
- Battle theme for all normal battles.
- Boss Battle Theme for most bosses.
- Dreadful Fight for the 2nd fight with Milon (right after you cross the bridge on Mount Ordeal, the 1st one uses the normal boss theme), Kainazzo in Baron, Valvalis in Zot, Rubicant in the tower of Bab-Il, against the 4 fiends in the Giant, and when Mopu-san (FuSoYa) and Golbez fight Zeromus and lose.
- Final Battle when Cecil and friends fight Zeromus (after Cecil uses the crystal on it).
- Ring of Bomb when you fight Rydia in Mist and I think it's also used when you fight the three Dark Imps (I guess that's the name of the monster) in the tower before Yang destroys the Super Cannon.
- Cry in Sorrow is used in the second half of the fight against Edge's parents when they recover consciousness, the first half is the normal boss music.
- Melody of Lute is not used when Edward fights alone in Kaipo. He plays it before the water hags appears, but I think the music for the battle is the boss battle, actually. However, Melody of Lute is used when you fight the Dark Elf the second time (when Edward saves your life), until the Dark Elf turns into a dragon.
- Golbez Clad in Dark is used when Tellah fights him in Zot, and when you fight him in the Dwarf Castle before Rydia arrives.
- Dancing Calbrena is used when you fight the dolls and when you fight Lugae and Balnab, before Balnab exploses and Lugae transforms.
- Sadness when you fight Kain in Fabul.
- I'm not sure if that's the real name of the track, it's called "Run" on my playlist... Anyway, Run is used in one battle in Fabul when Edward gets hit by an arrow/trips right before you enter the Crystal room. It is also used against Evil Wall and, I think, when you fight Plague.
- Cecil's Theme is used in the fights in the Intro when you fight Float Eyes and a Zu on the airship, but also when Cecil Battle his dark self on Mount Ordeal to become a paladin.
- The Final Fantasy Theme is used when Cecil and his friends are revived by those that were left on the Blue Planet during the fight against Zeromus, until you use the Crystal on it.
I think that's pretty much all of them. Right?
Oh, and guh... now that I think of it, I'm not certain if the fights with the Fiends before the Giant actually used the Dreadful Fight music or the Boss one... Oh well.