The number one thing drawing me into this track is undoubtedly Civil Twilight's vocals layered on top of piano. The dubstep is secondary, if not a bit of a distraction -- though admittedly it brings contrast to the beauty of the original track, further punctuating its weighty sound.
Civil Twilight are based out of my hometown of Cape Town, South Africa. I must admit that I hadn't heard any of their music before this -- and what a shame that was! I've been listening to them all morning, and am definitely a huge fan.