We can totally see why Yoo Jae Suk went in a near frenzy over IOI on 'Sugarman'--their performance of "Pick Me" was just perfect! 

IOI, who guested on 'Sugarman' for its April 26 episode, had everyone singing along to "Pick Me," and the loudest voice singing along was, as expected, from IOI's biggest uncle fan Yoo Jae Suk. 

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IOI put on a performance that was full of energy and charisma, smiling all the while as they sang and danced to "Pick Me"!

You can check out the performance for yourself in the video clip provided below.