Last year, young underground greats Pink Siifu and Fly Anakin got together and made the collaborative album FlySiifu’s. On the surface, they made for an odd couple. Pink Siifu is a rootless experimenter who’s spent time in a lot of cities and who makes wild, crackly music that draws on experimental music and punk rock. Fly Anakin leads the Richmond, Virginia crew Mutant Academy, and his music is more focused and straightforward. But on FlySiifu’s, a loose concept album about two clerks at a fictional record store, Siifu and Anakin found an extremely cool expansive stoner-rap common ground. And now, on a new EP, they’ve done it again.