Every time I think BTS has outdone themselves, they go and knock me off my feet. This past year I've had a crash-course lesson in K-pop and this is what I've learned: The group BTS is flawless. Truly.

America has only seen a glimpse of what BTS can really do in terms of their live stage performances. Sure, BTS has performed on shows like Saturday Night Live, Jimmy Kimmel Live!, and Good Morning ...