Riska AKA Rob McCallum is a DJ and producer originally from Sheffield but now living in East London. He also works as a journalist, currently as digital editor for DJ Mag, and has been published by a variety of platforms including Crack, Mixmag, Vice and Red Bull Music Academy.

On his monthly show, taking place on the fourth Wednesday of every month, Riska spotlights the producers behind instrumentals on the grimier end of the 140 spectrum.