The leader of the band is  Kim Tae-yeon . The other members are  Jessica Jung ,  Lee Soon-kyu  (Sunny),  Stephanie Hwang (Tiffany),  Kim Hyo-yeon ,  Kwon Yuri ,  Choi Soo-young ,  Im Yoona  and  Seo Joo-hyun . Watch Beatles Code With SNSD (Girl's Generation) After clicking our links please wait for 5 seconds