Besides its survey of determining the best K-Pop rookie groups of 2015, Star News conducted yet another survey to select '2015's Hottest Issue In Music.' The survey was based on the opinions of the same 28 experts of who had selected the best rookie groups. 

There were innumerable controversies and issues which had bubbled in K-Pop this year, but many experts agreed that the most hotly debated issue was IU's 'Zeze' controversy, which had earned a total of ten votes. 

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The experts said, "IU's 'Zeze' didn't only became an issue in music but also in the pop culture sphere overall, creating a societal impact; it proved that as a young producer making music, you are weighed down with heavier responsibilities. The controversy grew even bigger as IU shedding her past image became linked with the societal issues. It was a controversy that made us question how far once can push the boundaries of artistic freedom. On the other hand, it was a controversy which made us realize how much of an influence IU has on the public."