Yoona was taught by CSJH's The Grace Dana unnie. She learned from participating in musicals. She is more confident in dancing and acting than singing, which is her weakest link.

From LA to kpop, Tiffany misses her father which is her biggest support a lot.

Yuri did a CF in China, participated in a minor role in the movie "Attack on the Pin-Up Boys" as a talented female dancer. She has the nicknames of Black bean because of her black hear and Cola because of her spontaneous personality.

Hyoyeon learned hip-hop, Jazz and Latin dance at her elementary school, and later specialized and popping, locking and girl's hip-hop dance. She worked with Justin's Timberlake and Lee Hyori's head choreagraphers. Now learning under Shim Jae Won. She also studied Chinese for 1 year in China.

Sooyoung won a competition in 2002 in a Japanese TV Show 'Asayan' to form a Korean-Japanese girl group 'Route O' for the 2002 Korea-Japan World Cup. She's good at Japanese from living there.