What is dubstep? Here’s a crash course

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Brian discovers the existence of dubstep while talking about Lollapalooza, and Producer Cody Gough gives him a crash course in the musical style.

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A concert-goer crowd surfs outside of the main entrance before being let back into Lollapalooza after a thunderstorm on Saturday August 4, 2012. (Armando L. Sanchez / Chicago Tribune)