Red Velvet, "KBS Kayo Festival" teaser.

* "Rookie" released in February this year, "Red Flavor" in July, "Peek-A-Boo" in November, all became big hit.

* First place in "Girls group brand reputation" ranking of August, September, by Korean corporate reputation institute.

* Teaser of "secret party" on live broadcast from 29th, 8:30.