Played a Sega Genesis/Megadrive game about 20 years ago which had a music track stolen from Final Fantasy. Think it was either "Clash on the big bridge" or FF4 "Boss battle theme". Can't remember the gameplay and it may have been a japan exclusive game, all I remember is that there was Final Fantasy music at one point
early on in the game.
Does anyone have a clue??
I most likely have the wrong game here, since the one that I'm thinking of merely has some tracks that were obviously inspired by Final Fantasy rather than being directly lifted from it, but I may as well give it a try: Could it be Data East's 1993 platform game High Seas Havoc/Captain Lang (or the Codemasters-published 1994 European version, Capt'n Havoc, which is missing the first level)?
The entire soundtrack can be found in a YouTube playlist here
Even if it's not the right game in this case, it's a pretty great platformer, at any rate!