After heating up the summer with “Hot-N-Fun,” N.E.R.D. cools it down on “Hypnotize U,” the Daft Punk-produced single from their fourth album Nothing, coming November 2. Pharrell coos in a falsetto over the mesmerizing production, which the band debuted on “The Late Show with David Letterman” last month. Fall under Pharrell, Chad, and Shae’s spell below.