Ah, love songs with strong bass and high notes like this, great job.
Love the melody and strong beat. You play with the dynamics a lot too, which is good. I'm not a huge fan of dubstep, but the transition between it and the melody was good and it fit with the melody better than some other tracks I've heard. The vocals are also an interesting transition between the melody and dubstep. As for the actual dubstep itself, there were a lot of muddy sounds in there that I didn't really like, and sometimes the rhythm didn't really work for me...it seemed like the bass didn't correspond to the beat. Other than that, love the transitions, melody, and dynamics, and I'm sure you'll find a lot of other people who like this style better than me. ;)