Alejandro Ghersi (aka Arca and Nuuro) is a Caracas-born, Brooklyn-based producer of lurching, abstract hip-hop. In 2012, he issued a trio of short-form releases for the UNO label: the four-track Baron Libre, the six-track Stretch 1, and the most substantial of the three, the ten-track -- but still EP-length -- Stretch 2. His work caught the ear of Kanye West, who sought him to co-produce four tracks for Yeezus: "Hold My Liquor," "I'm in It," "Blood on the Leaves," and "Send It Up." That album was issued in June 2013. A month later, Arca released his own &&&&& for Hippos in Tan...