How do I make a music modifier code?

[hoodoo456]

I want to make a music modifier code for an SNES game called "Battle Cars", but I don't know how to do it. I really want to learn, and I can't find any useful tutorials, so if you guys have anything to tell me, please do.

[dlevere]

Music Modifier

This is just like eating pie. Good and simple.
1st: Listen to music start unknown search.
2nd: Cut off music or change it. Different to last.
3rd: Keep changing and keep doing as many different to last as you can, and at some point keep the same music and make the search equal to last.
By then you should have a few possibilities.

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