great

this is a remix of some megaman X not only one

its hard to recognize them but that makes this great

Coolness.

A well-done do-up of one of Sigma's better moments, though I didn't like that fight itself. Still, it's great for Sigma, who hasn't exactly been all that great since Megaman X5. Now, I have to look at your other stuff. Heh heh heh...

AWSOME !!

Megaman X 5 sigma battle music.... i love it :D great choice sir

If I recall correctly...

Megaman X2? if so, try remixing the first fight with sigma... or is this the 1st? if it it sue me i haven't played in a while... >_>

More instruments

I though I heard a "Flight of the Bumblebee" in there, and has more power than the last one. Though I can feel the theme and effect on the initial parts, its a bit hard to take everything properly. But, as the music itself, you've done well.