A few more FFXII tracks to enjoy:
Mostly it just has to be catchy. Something that tickles my eardrums, but there are some instances where I'm drawn to something due to a moment.
A prime example being Aerith's Theme. It's nice, but I'm not a huge fan of it on its own (it's used earlier in the game and didn't spark anything in me). The moment where it's playing instead of J-E-N-O-V-A during the Jenova LIFE battle and the scenes before and after it is what won me over. That was some powerful stuff to me back in the day.