Watch: MAMAMOO 'mumumumuch' MV Teaser Released

A day before the release of the best album, MAMAMOO heated up the comeback fever by releasing a teaser for their new song "mumumumuch."

On September 14, MAMAMOO released the music video teaser for their title song "mumumumuch" of their forthcoming album "I SAY MAMAMOO: THE BEST" through their official SNS.