It has been revealed that Girls' Generation member Seohyun's appearance during the North Korean Art Troupe performance on February 10 was added at the last minute.

A representative of Seohyun's agency spoke with Yonhap News on February 12, relaying that the star received a sudden call from the Blue House on the day of the event.  "It wasn't planned ahead or anything but she rose to the stage after receiving the sudden contact."

The rep continued, "The Blue House didn't explain in detail but requested Seohyun to participate in the performance.  And requested two songs to be sung on stage.  One of them had to be performed on the spot.  Since this was a sudden offer, there was no time to rehearse beforehand."