K-pop's growing pains

Published 8:27 PM ET, Thu February 16, 2017
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From left to right, Yenny, Sun, Sohee, Lim and Yubin of the Wonder Girls onstage at iHeartRadio Presents Wonder Girls at iHeartRadio Performance Theater on September 5, 2012, in New York City. The decade-old group disbanded on January 26, 2017. Sara Kauss/Getty Images
2NE1 at their concert at the MTV Video Music Awards Japan 2012 at Makuhari Messe on June 23, 2012, in Chiba, Japan. The South Korean pop band disbanded November 2016. Ken Ishii/Getty Images
Big Bang's concert on March 11, 2012 in Seoul, South Korea. The group performed their last concerts in January after announcing they would go on hiatus to complete their military service. Chung Sung-Jun/Getty Images
Members of I.O.I pose on the red carpet at the Mnet Asian Music Awards (MAMA) at Asia-World Expo in Hong Kong on December 2, 2016. They disbanded on January 31, 2017. ANTHONY WALLACE/AFP/AFP/Getty Images
Rainbow, at their concert at the MBC Music Festival at Olympic Hall on January 31, 2012, in Seoul, South Korea. The group split up last November. Chung Sung-Jun/Getty Images AsiaPac/Getty Images
Kara on stage during the K-POP festival on September 28, 2013 in Wonju, South Korea. They disbanded in January 2016. Chung Sung-Jun/Getty Images
4Minute onstage during the 20th Dream Concert on June 7, 2014 in Seoul, South Korea. The South Korean pop group disbanded June 2016. Chung Sung-Jun/Getty Images