Found this eerie gem whilst digging through a collection of my old audio editing experiments. This is the original "Brinstar" theme from Metroid layered onto a live 2002 orchestral performance of the song by the New Japan Philharmonic. I adjusted the fluctuating tempo of the symphony to match up with the creepy game music, then I added some fun digital SFX and a dash of reverb for good measure. Enjoy!
If you'd like to use this song in a project, please buy a license: