Girls’ Generation-TTS, also known as TTS or TaeTiSeo is a subgroup of Girls’ Generation, composed of the members: TaeYeon, Tiffany, and SeoHyun.
Their album ‘Twinkle’ was released in 2012, which became the first album by a Korean artist to rank number 1 on the Billboard World Albums chart.
In September 2014, the group released their second album ‘Holler’, which became their second album to rank number 1 on the Billboard World Albums chart.
In December 2015, Girls’ Generation-TTS released their third album, a Christmas special album titled ‘Dear Santa’. As an effort to support music education for children in Asia, Girls’ Generation-TTS contributed a part of the album’s sales profits to charity campaign, ‘SMilefor U’, a campaign held between S.M. Entertainment and UNICEF.