The stage music in Them's Fightin' Herds does something really clever that most fighting games don't bother with. Arizona's stage theme is this dusty Western stomp with fiddle and acoustic guitar, real frontier energy. But every character variation subtly rewrites the arrangement to match whoever's fighting.
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The Oleander variation darkens things up, Paprika's gets playful, Tianhuo's brings in more percussive heat. And when final round kicks in, everything just escalates. The whole system is basically a dynamic soundtrack disguised as a track list.
RC88 and the composers at Mane6 understood that a good fighting game theme needs to shift with the momentum of the match. If you play any fighters at all, you need to hear how this indie team handled adaptive music.