Already mentioned by MyEpitomeCliché and quoted several times.
I don't know how Tim and Geoff Follin did this. It has to be black magic or something. How is it possible to get out these sounds from a NES?
Threads of Fate - http://youtu.be/RumBRltAUVI
I like several songs from this soundtrack, I really like how it sounds.
F-Zero GX - Mute City Theme