Good Job Vigilante.
THis mix was quite, Interesting, the beginning 'Da de da' distorted noise set me off first. Then...Well...
I liked the 'Zero' Theme incorporated into Sigma Stage one. I bet if you re-vamped this, it would be one hell of a piece. All in all, I give it a 8.5/10.
You did a nice job, and I love this theme. The guitar made this piece in my opinion.
I thought it was my dad playing the Video Game, but you actually had multiple guitars. NICE! Hopefully I will get up to your calliber someday.