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Sohyun shared on her Instagram on the 28th, "#Whatcha Doin' Today in the waiting room", along with the clip of the members and staff going about their normal preparation for 4minute's stage in the dressing room but once the song came on, they all went 'leggo' shaking along to the infectious beat, similar to those 'Harlem Shake' videos that used to be so popular.

Check it out below!