Jessi in 'K-Pop Idols' Courtesy of Apple TV+. Of course, there have been other types of Korean pop musicians who have found success internationally long before the advent of K-pop idol groups.

Inside Apple TV+’s new ‘K-Pop Idols ... “K-pop is not known for being the most open,” said producer Cramp, interviewed via Zoom alongside fellow producer Turner.

K-pop fans' desire for flawless pictures of their idols has created a niche market in Asia's tech scene. Businesses are offering day rentals of Samsung Galaxy phones to concert goers for under $50.