Heart Shaker

A fizzy, confession-ready pop anthem about mustering the courage to tell your crush they've shaken your heart.

"Heart Shaker" is a song recorded by South Korean girl group Twice. It was released by JYP Entertainment on December 11, 2017, as the lead single from Merry & Happy—the group's reissue of their first studio album, Twicetagram. The song was composed by David Amber and Sean Alexander, with lyrics by production team Galactika. Billboard described it as a "bright pop song [that] incorporates funky guitar riffs, twinkling synths, and soft harmonizing to create a vintage wintertime feel, but with an upbeat melody and impish delivery of the verses and the energetic chorus." Lyrically, it captures the fluttering anxiety of a girl who's finally ready to confess to the one who's stolen her heart.

Quick Facts

Artist: Twice
Album: Merry & Happy
Language: Korean
Released: 11 December 2017
Genre: Pop; dance
Label: JYP
Composer: David Amber; Sean Alexander
Lyricist: Galactika

Lore & Background

JYP Entertainment first teased "Heart Shaker" inside the music video for "Likey" — the phrase appears on a street advertisement and an arch, and the official Instagram post for "Likey" was hashtagged #HeartShaker. On November 27, 2017, JYP announced the Christmas-themed reissue of Twicetagram, titled Merry & Happy, set for December 11. The lead single's title was revealed three days later. From December 4–11, a drip-feed of teasers and lyric previews built anticipation. The album and its music video dropped on December 11, along with digital release on major platforms. A Japanese-language version, penned by Risa Horie, Na.Zu.Na, and Yu-ki Kokubo, later appeared on the compilation #Twice2 (March 6, 2019). On November 7, 2023, Twice released "Heart Shaker" (Galactika Holiday Remix) as part of Amazon Music Originals' holiday soundtrack.

Reader's Guide

The song debuted atop Gaon's Digital Chart and Billboard Korea's Kpop Hot 100. It also peaked at No. 2 and 4 on Billboard charts' World Digital Song Sales and Billboard Japan Hot 100, respectively. "Heart Shaker" surpassed 100 million streams in September 2019 and 2,500,000 downloads in March 2020 on Gaon Music Chart.

Did You Know?

The music video ends with a mirrored choreography sequence that doubles the members, creating an eighteen-member Twice.
The music video surpassed 100 million views on YouTube in just 41 days after upload.
A Japanese-language version of "Heart Shaker" was included on Twice's compilation album #Twice2, released on March 6, 2019.

Frequently Asked Questions

What is Heart Shaker?

Heart Shaker is the lead single from TWICE's December 2017 reissue album Merry & Happy, an expanded version of their debut studio album Twicetagram. It was released on December 11, 2017, through JYP Entertainment.

Who wrote and produced Heart Shaker?

David Amber and Sean Alexander composed the track, while the production team Galactika penned the lyrics. JYP Entertainment handled the release and distribution.

Which album does Heart Shaker appear on?

It is the title track of Merry & Happy, the reissue that expanded TWICE's first full-length album Twicetagram with additional new songs. The reissue kept all original Twicetagram material while adding Heart Shaker and other tracks.