TWICE have dropped a 30-second version of their music video teaser for "Heart Shaker"!

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"Heart Shaker" is the title track of TWICE's upcoming 1st album repackage 'Merry & Happy', which is a special release for the holiday season. The above MV teaser is a shortened clip of the teaser video revealed previously, but it lets fans focus on the song and choreography right off the bat!

The full release of 'Merry & Happy' with "Heart Shaker" is set for December 11.