Diddy, Lil Wayne, and Justin Timberlake rock sunglasses at night on “Shades,” the latest leak from his oft-delayed album Last Train to Paris. Formerly released with tags, this version sees the Bad Boy mogul switching roles with J.T., with Puff singing through Auto-Tune and the former *NSYNC-er spitting a hushed rap verse. Check the dark, electronic club tune below, and look for the Train’s arrival this December.