This year’s 4/20 just keeps getting better. The duo of the Alchemist and Oh No, better known as Gangrene, will release a 100 percent free EP called The Odditorium that’s sounding just as ill as this past January’s Vodka & Ayahuasca. How can I write that, you ask? Well, it probably has something to do with the fact that preview cut “Walk Hard” has been on repeat for the past 20 minutes. Time to rob someone, y’all. BRB.