You guys have NO IDEA how long I looked for this version of the classic Ridley battle theme from Super Metroid. You hear it whenever you fight Crocomire, Kraid, Phantoon, or Mecha-Ridley in the ADDICTING Newgrounds Flash game "Mario Remix: Boss Edition", one of my all-time favorites since late middle school.

I found the MIDI file on this website dedicated to video game MIDI's. This is just the SNES page, so go wild and check the rest out to your heart's content!
http://www.vgmusic.com/music/console/...