DK Bongos work with Smash Bros. Wii U
— Ben Bertoli (@SuperBentendo) November 16, 2014
Super Smash Bros. for Wii U supports a whole bunch of controllers. You can use a GameCube controller, the GamePad, the 3DS, the Wii Remote, and more.
As it turns out, the DK Bongos are also supported! You know, those controllers that were made for Donkey Konga and Donkey Kong Jungle Beat for the GameCube. Players can use the DK Bongos by plugging them in via the new GameCube Controller Adapter for Wii U.