“Puro Instinct, the L.A.-based duo of sisters Piper and Skylar Kaplan, first presented themselves to the world in a fog. Both on their early singles as Pearl Harbor, and the Ariel Pink-aided, cherry-colored funk of their 2011 LP Headbangers in Ecstasy, the Kaplans made their name in humid dream pop. They presented legitimate hooks and sleepwalking guitar leads in dense, dreary atmospherics. But fiv”