One of the darkest, edgiest tunes this side of the millennium. It's hard to believe that the same guys are responsible for popular feelgood standards such as "Fix You" and "Every Teardrop Is A Waterfall".
Although it's a form of electronic music, dubstep borrows many elements from rock. Structurally, it is not very different from nu metal, the key elements in both cases being a tight verse and an over-the-top chorus. The most defining aspect of a dubstep track is, of course, the bass drop. It is marked by a heavy (and often distorted) bass part. A 'low frequency oscillator' can be used to rhythmically manipulate an extended bass note. This gives it a distinct 'wobbly' effect that is usually accompanied by a syncopated drum groove.
The bass drop has already been discussed and glorified at length via many a Youtube video. For those who are new to the genre and would like a DIY approach to discovering it, I recommend doing what I did and entering 'dubstep' in the Youtube search bar. A few of my favourite bass drops are listed below.
Their 8-night retrospective concert from the 10th to the 17th of this month at the Museum of Modern Art, NY, promises to be one of the greatest live experiences in the history of techno.