There was a mix I found on here a while ago that I can't for the life of me remember the name of. I just know it was done entirely with an old-school chipset, and that it was revolutionary at the time for making such good use of the original SNES soundboard (or whatever system, I can't recall). It was very spooky, made me think it was a Castlevania mix, but I can't find it.
I want to just start downloading torrents and listening to everything, in hopes that I'll run across it eventually... but that will have to be a project for another day. Gotta head to work with this piecemeal song stuck in my head.