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On the latest Saturday Night Live, BTS brought something that few other performers on the show can manage: intensefandom.

The K-pop boy band superstars showed American audiences just how powerful the ARMY -- that's what their fanbase is called -- really is. The energy in the live studio audience is palpable in both YouTube clips of their performances -- of "Mic Drop" and the new song, "Boy With Luv" -- with the usual polite clapping replaced by shrieking cheers.

Watching them perform (if you haven't before), it's easy to see what's so appealing. They're completely in sync (no boy band pun intended), trading off vocal lines while executing perfectly choreographed dance moves.

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See for yourself, here's "Mic Drop."

They also performed "Boy With Luv," which premiered just days ago and immediately took over on Twitter's worldwide trending list. The song dropped with the rest of their new album, Map of Your Soul: Persona, on Friday.

For all the excitement evident in the audience, the loudest cheers reverberated across social media as the BTS ARMY noted all the enthusiasm and welcomed the legion of newly converted SNL-watching fans.

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