I've noticed an astonishing lack of remixes from the original Mother (or Earthbound Zero, if you prefer). In particular Eight Melodies, a song which pretty much defines the game. Anyone who would be willing to remix this song would ( at least in my eyes) be a hero!
EDIT: Forgot to out up a link to the song.
Here's the Soundtrack version: http://www.youtube.com/watch?v=yYlPTYBhtOI
And the original version: