Part of the rapidly expanding UNO roster, Venezuelan producer Arca offered up a free EP last week, the six-track Stretch 1. It’s a dark effort, one heavily steeped in brooding electronics and clacking hip-hop rhythms, and now, Arca has himself a video that perfectly (and creepily) captures his music’s charismatically unsettling vibe. “Ass Swung Low” is a moody piece of pitch-shifted hip-hop, and this clip only makes things more ominous with its computer-animated images of babies and small children mean mugging for the camera. Those little faces are sure to pop up in somebody’s nightmare, and, if Arca is lucky, perhaps his track will too.