Does that mean it's technically optional then?Well in SC and FC if you dont want the patch original bgm you leave data0.psarc alone......
But in the 3rd, The database said that there are 3 files to be patched..... which are data.psarc, data0.psarc, and eboot.bin.......
If you patch data0.psarc it will give you a subtitle in the opening intro of the game......
Patch the data0.psarc second time using original bgm.bin, and that will give you the original bgm patch