EXID appeared on SBS powerFM's 'Cultwo Show' on December 31, where they talked about their hit track "Up & Down."

The girls said that they performed the song over 3,000 times, but added, "Still, there are times when we make mistakes."

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The DJs asked who usually messes up, Hyerin pointed out herself, stating, "Rather than messing up on the song, it is all because of the choreography.  We have about four different versions of the dance.  There was a time I did the event choreography when the other four were doing the broadcast choreo version. "

That could definitely get confusing!  Which dance version do you like?