From the arcade classic Gauntlet. I ripped this from an old arrangement I did with MML (Music Markup Language) after my hard drive died, then converted it with an MML to MIDI converter. The converter didn't quite get the complicated peaks around the halfway point of the song, so it's a little bit off, but not by much.
Also, I don't know the composer of this song. If you do, please comment or email me.