The son of a genetic engineer, Dave Hartley has eschewed his father's profession but decidedly inherited his analytical proclivities and love of ''the lab.'' As Nightlands, Hartley is a scientist trying to create and understand art through analytical process. Here, with sophomore album Oak Island, his follow up to 2010's superb Forget the Mantra, new questions are explored: what happens when the human voice is layered exponentially? Nightlands takes us on a spirit quest through lush forests down into The Uncanny Valley.