This has to be one of my all time favorite soundtracks when I played through Final Fantasy II on my Dawn of Souls copy. The song popped up occasionally throughout the game for optional bosses like monster-in-a-box type situations. Once I unlocked the music player, I would listen to it in the background while I did other things.
The second half of the theme as it goes to repeat is the most emotional, dramatic part of the soundtrack.
I'm calling for someone, anyone, with a talent for more orchestral arrangements to give this wonderful, lesser known track the attention it deserves.
Here's a youtube link to the song:
A couple of other themes that may work well from the game to give variety would be the equally epic Castle Pandemonium theme (
), the melodic parts of Battle Scene 2 (
), or Ancient Castle for softer melodic contrast (