Very great work done here, excellent skill level
First off, I would like to let you know that your music is very promising.
Extremely tight (and I dont think this was quantized much at all, which is awesome), solid melodies give the listener a feeling of raw energy. I love "drop D" songs like this, especially when the voice harmonies are so brilliantly done.
Good luck in the future mate, you're bound to get scouted if you keep up this level of work, (The guitar octave harmonies are great as well by the way)
nightvision