AT THIS POINT in their reign as the world’s biggest band, the members of BTS are accustomed to hero worship and nervous fans. But as that group’s leader, RM, sits across from Pharrell Williams in early September, onstage in an empty, secured auditorium at Los Angeles’ Museum of Contemporary Art, he’s unnerved to find himself on the other side of the equation. It feels “embarrassing,” RM says with a smile, to talk about his artistic journey in front of “my own idol.”
Williams, eternally youthful and smooth-skinned (needless to say), is relaxed and full of small talk, in a leather jacket, matching leather shorts, boots, and a blinding array of ice-studded jewelry on one wrist. RM, in a Bottega Veneta double-breasted brown suit, is quieter, seemingly shuffling through the…