Chain Reaction

[Taeyeon/Seohyun] Action Chain reaction-action Chain reaction-action

[Taeyeon] Yasashiku sa reruto chotto, yasashiku naru no

[Jessica] Fuan'na me o sa reruto (sa reruto) fuan ni naru no

[Tiffany] Dandan You're Loving Me, dandan I'm Loving You

Rensa shite ku kanjÅ no rarÄ«

[Sooyoung] Ichiga+Ichiga ga 2 ni naru kankei

Nanka ja manzoku dekinai dakara

[Yoona] TÅshindai yori choppiri

Åkina ai tewatashi de kakezan-chÅ«

[All] Baby Ding-Dong hirogaru Chain Reaction

Uketotta ai de Ch-Changing My Mind

Kara sashidashu ai de Ch-Changing Your Mind

[Jessica] Ai ga ai o yobu Chain Reaction

[Seohyun] Sunao na omoi o kiku to, sunao ni naru no

[Sunny] Kakehiki wa shinaide, zuru kashikoku natchau

[Taeyeon] Dandan You're Loving Me, dandan I'm Loving You

Eien no kanjÅ no rarÄ«

[Yuri] Itsuka sekai mo kaete shimau wa

Anata no hÄto janainara

[Hyoyeon] TÅshindai yori choppiri

Åkina ai rÄ« shite kakezan-chÅ«

[All] Baby Ding-Dong hirogaru Chain Reaction

Uketotta ai de Ch-Changing My Mind

Kara sashidashu ai de Ch-Changing Your Mind

[Tiffany] Ai ga ai o yobu Chain Reaction

[Jessica] Oh~ oh Chain Reaction oh oh

[Sooyoung] Tebanasu yÅ«ki no nai ([Sunny] Oh Baby)

[Yoona] Semai kokoro ni ([Sunny] Are You Ready?)

[Taeyeon] Shimaeru saizu no shiawase wa chÄ«sai

[Yuri] Hito kara hito e

[Tiffany] Love to iu nano Virus ga

[Seohyun] Densen shite All Over The World-

[Jessica] SÅ wa ra Hito kara hito kara hito kara hito e~

[All] Baby Ding-Dong hirogaru Chain Reaction

Uketotta ai de Ch-Changing My Mind

Kara sashidashu ai de Ch-Changing Your Mind

Ai ga ai o yobu Chain Reaction

[Taeyeon] Chain reaction, [Tiffany] yobu chain reaction

[Taeyeon] Chain reaction, [Tiffany] yobu chain reaction

[Taeyeon] Chain reaction, [Tiffany] yobu chain reaction

[Taeyeon] Chain reaction, [Tiffany] yobu chain reaction