OK real talk, these two are my favorite underrated soundtracks from classic games
Romancing SaGa - Beat Them Up! (Honestly these games have amazing OST)
http://downloads.khinsider.com/game-soundtracks/album/romancing-saga-original-sound-version/25-beat-them-up-.mp3
Here's and amazing remix of the same music
Astyanax - Intro & Round 5 Cutscene
http://downloads.khinsider.com/game-soundtracks/album/astyanax-nes-/03-intro-round-5-cutscene-round-3-1-3-2.mp3