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"Knock Knock" is a song by South Korean girl group Twice. It is the first and title track in the group's first special album, Twicecoaster: Lane 2. The single and it's music video was released on February 29, 2017.

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Music video[]

The music video for the title track "Knock Knock" was directed by Naive Creative Production. Stop-motion effect was used in some of the scenes in the video. It earned almost 10 million views on YouTube within 24 hours since its release and set a new record for the fastest K-pop group music video to reach 30 million view count in only 152 hours.

A sense of innocence was portrayed in the music video, which featured Twice having fun in a slumber party and snowball fight. Producer Park Jin-young, founder of JYP Entertainment, also had a short appearance. The last scene was the same ending as the music video of "TT".

Video Gallery[]

Trivia[]

  • Knock Knock was produced by Lee Woo-min and Mayu Wakisaka, and written by Shim Eun-ji, Lee Woo-min and Mayu Wakisaka.
  • It is the first titled song that is not composed by Black Eye Pilseung, as all three previous titled songs are composed by them.
  • The music video has more than 170 million views.
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