London bass-ranger Caspa recently put down a two-hour mix of dubstep subquakes for Radio 1, flipping in a grip of his own jams and those of his Dub Police bredren (aka himself, Rusko, etc, you know, only the vanguard of London club tremors, nobody special). He kicks it off with his remix of Deadmau5's "I Remember," which is like if dubstep took a break from skulking the underworld and went for a swim in a river, and wobbles appropriately from there. Good primer if you're going to any one of dude's next gigs, there are 9000 in a row (select US dates in September!).
Download: Caspa's Essential Mix