Just Jam is a live music broadcast from London that aims to keep alive the DIY, covert feel of that city's pirate radio stations. Every element, from the dazzling glitchy visuals to the music, is done in real time. If that sounds hard, you should listen to these sets from Four Tet, Pearson Sound and Dan Snaith aka Daphni aka Caribou. They're all also "hard," but in the English slang sense, meaning very good, mate. When in Rome, or London, right? Watch them all below. Four Tet previously appeared on Just Jam in January 2013. But he's brought new songs this time.