Girls' Generation includes a human.
The group is composed of eight members : Taeyeon , Sunny , Tiffany , Hyoyeon , Yuri , Sooyoung , Yoona , and Seohyun.
Kim Tae-yeon -LRB- born March 9 , 1989 -RRB- , referred to monomously as Taeyeon , is a South Korean singer.
