Having performed exclusively on Inkigayo last Sunday, GD&TOP brings their A-game to M! Countdown today with the most expensive stage ever constructed in the history of Mnet. And to make their debut on M! Countdown that much more special, GD&TOP performed a total of 3 songs: "High High", "Oh Yeah" (featuring 2NE1's Park Bom), and "Knock Out" So check out the triple-header performance of their brand new music!