I love it, another song that would fit amazingly well into this is Silver Surfers 2nd level music since it gets no love and my skills of a musician = suck.
Oh yeah my fav part is Contra Boss at 3:21 on mark.
I don't have words for how fucking awesome this is. As far as direction goes... uhm keep up with the awesomeness I have no idea, I wish I was better with music.
I had to go figure out my password so I could comment on how fucking awesome this is. I love the mix of the two songs.
Silver Surfer IMO had the best quality music for the NES.