This is the very metal theme for the Temple of Wind stage in Megaman Zero 2, which is the penultimate stage in the game. The place the original song is from is supposed to be a place with a lot of electricity (since wind = electricity in Megaman Zero apparently), so it would be best to use this on a place of that sort, preferably in a sky/mountain area as well.
EDIT: Made the GAIN duration on the strings smaller.
There's a few suggestions that would make this port better gameplay wise. While not affected MUCH by sfx, some parts still affect those notes and cut off. Most of the notes playing on the sfx channel can be moved to channel 3 and 4 when there's nothing playing. Moving that around will help keep the song more fully intact during gameplay. The cymbal cuts off too early multiple times. Most of these notes can be put on (the now) empty channels that would be in channels 7 and 8 now. Also dial on the volume down, the sfx is almost barely audible. Remember, these are bg songs, not for in your face.