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On the July 29 airing of 'Lan Cable Friends IOI,' the girls had a blast jamming and just having a blast to Big Bang's "Fantastic Baby." 

IOI let loose, jumping up and down, head-banging, and screaming at the tops of their lungs, enjoying a crazy good time with one another. 

It seems like IOI really needed this break and to just be normal girls on TV. There's nothing like a good yelling session at karaoke to relieve your stress!