Girls' Generation's unit group Taetiseo released the teaser video and a highlight medley video of their new mini album's title song "Holler".

On September 15, Taetiseo released the teaser video of their title song "Holler" on their website, Facebook, and SMTOWN's website. They also released a medley of all 6 songs in their new album.

Taetiseo released their new song "Whisper" first on September 13 on various music websites, shooting up to rank 1 at an instant.

Taetiseo will be holding a showcase on September 16, officially starting their comeback.