That opening bass hit on "Jazzy NYC '99" changed what fighting game music was allowed to be. Hideki Okugawa composed 3rd Strike's soundtrack like a late-90s DJ set, pulling from jazz, drum and bass, jungle, and trip-hop while every other fighter was still doing guitar riffs.
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"China Vox" layers Chun-Li's stage with a hypnotic vocal sample that burrows into your skull permanently. Makoto's "Spunky" bounces with this confident funk that perfectly matches her no-nonsense fighting style. "Killing Moon" for Gouki goes pitch-black and industrial.
Even "The Longshoreman" has this lazy, rolling groove that makes you want to just vibe instead of parry. The whole thing aged better than most actual music from 1999. If you've seen the Daigo parry clip a thousand times but never sat with the full OST, you owe yourself that.