Taken at the backstage of Music Bank's Year-End Special, here are TaeYeon, Tiffany, and SeoHyun together with the girl group named Mamamoo.
Take a look at their lovely group photo below~
Release Date: January 17, 2017
Release Date: June 28, 2016
Release Date: December 10, 2016
Release Date: May 17, 2016