A staff member's action at Ailee's 10th-anniversary concert is garnering much attention.

On January 29, Ailee had her concert and celebrated her debut anniversary with her fans. During the concert, Ailee asked her fans to request any songs they wanted her to sing. 

Her fans requested that she sings "Let It Go." She happily accepted their request and began singing the song when a concert staff member suddenly appeared on the stage.

One fan shared the video of the incident and explained, "Ailee sang a request song at her concert and a staff member suddenly appeared on stage, so I thought there was an audio mistake but...staff began spraying fake snow. Lolol."

In the video, Ailee was passionately singing "Let It Go" when a staff member quietly appeared behind Ailee. The staff member then waited until the chorus and sprayed fake snow. 

The staff member continued to spray the snow following Ailee's hand gesture as if she was spraying out snow with her hands.

After seeing the video, other netizens praised the short impromptu performance and commented, "That staff member is very sensible," "I think 'Let It Go' was an excepted request song," "Ailee is singing so well," and "This is so cute."