Group Crayon Pop held a flash mob and gained much attention.

On December 31, Crayon Pop performed their hit song, "Bar Bar Bar" at the 2013 MBC "Gayo Daejejun."

They held a flash mob concept performance in Yongsan and had many fans gather to watch them.

Many of the people watching were seen singing along to the song as well.

Their flash mob performance also ranked number 1 on portal search engines on January 1.

Internet users commented, "They really had a great 2013" and "They are always so fun."