SEVENTEEN group performance practice 2 (NU'EST - Action)  

I think NU'EST's "Action" choreography was prepared only by the members who knew it, but it changed to a group choreography a month before the performance. The members who know this choreography and the members who don't know this choreography are full of worries.
(Jun, DK, Joshua, Jeonghan didn't learn the 'action' because they joined the company late)