On April 19, 2012, S.M. Entertainment officially announced the formation of the sub-group, affirming in its official press release that the intention was "to gain the attention of fans with all aspects of music, performances and fashion styles." He also hinted at the possibility of other sub-groups. The name "TaeTiSeo" or "TTS" was created by the first syllables of Taeyeon, Tiffany and Seohyun.