MAMAMOO dropped a new teaser video for the track "mumumumuch" from their best-of album 'I SAY MAMAMOO: THE BEST.'

In this new video, the girls radiate electrifying energy as they are ready to promote their new song, "mumumumuch." Just a day before the release, the girls released the music video teaser for their new song. In the video, all the members enjoy an exciting party with one another.

 As seen previously, this collection album will contain remixes of their hit songs, including those of "Paint Me," "Starry Night," "You're the Best," "Words Don't Come Easy," "Decalcomania," "Egotistic" and "Wind Flower."

Take a look at the teaser video above and stay tuned for 'I Say MAMAMOO: The Best,' coming on September 15 at 6 PM KST!