Good Job!
Wow, I really like what you've done here, it sounds VERY professional. I like how you keep alternating between the original and the heavy metal. One thing about this feature, though, is that it is a little bit too sudden. It doesn't come as a plaesent surprise, it kind of makes the listener all edgy and nervous. Easing in and out of these transitions a little more would very much help this.
I thoroughly liked the little sub-theme you introduce at 0:54. it showed that, while this wa a remix and was sticking to the original alot, it was still your song and your remix and you could do whatever you wanted to it.
So, do you use a program to create this, or are you like recording playing the guitar, etc.? Either way, it is very, very professional sounding :)
Keep up the good work! - Cobra151
P.S. - You the MeastroRage do know this is the Tetris Theme Song right? Just double checking since neither of your Authors comments, on either of the peices mentioned it :P