IU was shocked by ZE:A's Kwanghee's vocal talent on the August 22nd episode of 'Infinity Challenge'.

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IU watched Kwanghee as well as Big Bang's G-Dragon and Taeyang practice for their performance with the song "That's Right". J.Y. Park, who also watched, commented, "Kwanghee did that very well," and IU also said, "He sings well. I was shocked."

Were you surprised by Kwanghee's talent during his collaboration practice for the 'Infinity Challenge' music festival? (starts at 11:00)