RT M Countdown Backstage Secret [TTS] with English Subtitle

Girls' Generation-TTS (also known as Girls' Generation-TaeTiSeo, TaeTiSeo) is the first official sub-group of South Korean girl group, Girls' Generation, formed by S.M. Entertainment in 2012. The sub-group is composed of three Girls' Generation members, Taeyeon (leader), Tiffany, and Seohyun.

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