Megaman X: GBD Stage Select 

Thanks fam

Not Skyro, but it is by hexadecimal editing. However this is not complicated as you can use a tool called VGMTrans which accurately explains each byte. With it you can edit the SPC files directly. Just be careful as they have a little 100h offset in some cases. Once this works you can test your track on a SPC player such as Audacious, Deliplayer or KBmedia.

@@Knightlain thanks for the info, another mmx hack uses custom music (mega man x generation by sophia)

My guy here is correct, but to answer your question as to who imported the track and tweaked it, it was done by someone who goes by Gi Nattak