Self-taught Chilean guitarist Satou Brainchild was inspired by Video Games Live in Santiago to spend several months assembling a medley of tunes from the first five Mega Man X games, i.e. the PROPER series before Capcom f*cked up the canon for the sake of more money.
This is that medley. It is glorious.
If you wish to download it, hit up Satou's SoundCloud page here.