Merry & Happy

Merry & Happy is the reissue of South Korean girl group Twice's first studio album, Twicetagram. The Christmas-inspired album was released on December 11, 2017. In addition to the original track listing, it has two new songs: the first track is titled "Heart Shaker" and the eponymous second track "Merry & Happy" was written by Park Jin-young. The album and "Heart Shaker" debuted at No. 1 on four charts of Gaon—Album Chart and Digital Chart, Download Chart and Social Chart respectively, while "Merry & Happy" entered and peaked at No. 24 on Digital Chart.