When we posted "All Summer," the Converse-funded collaboration between Best Coast's Bethany Cosentino, Kid Cudi, and Rostam Batmanglij, it was accompanied by a photo of the trio mugging with over-sized versions of their own heads. They put the heads to use with a game of musical masks in this video that finds "Cudi, Rostam, and Bethany romp[ing] in their warm ...