>> reporter: you know it's big when u.s. talk show, ellen degeneres does her own version or when james cordon does his version. what we know is you will probably be humming it for the rest of the day. pau pau paula hancox, cnn, seoul. >> thank you for being with us this hour of the "cnn newsroom." i'm george howell in cnn headquarters in atlanta. our news continues live from london. you are watching cnn, the world's news leader. welcome to the place where people go