Snake Man's theme is the Guile's theme of Mega Man
Mega Man junkies out there probably remember the release of the original We are ROCK-MEN! CD, featuring arranged rock songs across the Mega Man and Mega Man X series (plus one Mega Man Legends song).
Well, it seems as if the team isn't done yet, as We are ROCK-MEN! 2 is now a thing, and you can check out the preview above, which shows off a sample of the compilation's full track list.
Founded by members of the Capcom Sound Team, they're basically the Black Mages of Mega Man music. I can totally dig that -- especially when they're giving the Snake Man theme some love.
You can buy it now at Capcom's Store if you're interested.