I am still waiting for Optomon's Response, but I just came to know that we need to modify the mapper inside in the ROM.
It shouldn't be to difficult, if we have the tools at hand for that task, which is knowledge.
Even though I never programmed in my life, I have a theory how we could make an inferior mapper to an more superior one, which matches the newer mapper, by using the data which is in them.
This data will be put into databanks in forms of script, which are modified in the way, that it matches with the old one. This extension gives the older mapper more options and enables things which were impossible without it.
That is the plan. If Optomon can give us the needed data of the better mapper, which is responsible for the music, we might have a chance.