BTS is a record-breaking machine.

1 onBillboard’sDigital Song Saleschart."

So, just how did this performer learn the language that led to his global fame?

Kim Nam-joon talking into a microphone

“Firstly, I had no interest, because I cannot understand a word.

But [my mom] thankfully let me watch it in Korean, like, subtitled.”

I think that’s why [I learned English so well].

BTS talking on stage

Their speech is clear and easy to understand.

“Friendswas more than just a way for RM to learn English, though.

He also found himself quite entertained by the show and counts Chandler Bing as his favorite character.

He also loved following the soap opera-like love lives ofRachel Green and Ross Gellar.