Stylistically, Krizz Kaliko is among the most fearless rappers working today. Even as he bounces through radically different sounds on 2013’s Son of Sam, he always has a tight grip on his concept and its execution. He dabbles in R&B (“Send Your Love,” “Kill for Your Lovin’”) and downer hip-hop (“Why So Serious,” “Scars,” “Unable”) without ever losing the underlying vigor. It’s near impossible to make a convincing merger of rap and metal, but “W.A.N.S.,” “Reckless,” and “Fingers” are the album’s highlights. The volcanic riffs prove to be the natural extension of Kaliko’s outsized flows.