BTS Is About To Be The Biggest Band In The World

(CNN)If you haven't heard of BTS yet, it's time to succumb to the inevitable: The Korean boy band is taking over the world. Their new album, "Map of the Soul: Persona," out today, is expected to demolish international sales charts. They're about to drop a new single featuring American pop star Halsey. And they'll bring down the walls of studio 8H this weekend when they appear on "Saturday Night Live." This is One Direction big. This is Beatlemania big.