"Knock Knock" (stylized in

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) is a song recorded by

South Korea South Korea, officially the Republic of Korea (ROK), is a country in East Asia, constituting the southern part of the Korean Peninsula and sharing a land border with North Korea. Its western border is formed by the Yellow Sea, while its eas ...

girl group

TWICE Twice (; Japanese: トゥワイス, Hepburn: ''To~uwaisu''; commonly stylized as TWICE) is a South Korean girl group formed by JYP Entertainment. The group is composed of nine members: Nayeon, Jeongyeon, Momo, Sana, Jihyo, Mina, Dahyun, ...

for their special album '' Twicecoaster: Lane 2'' (2017). The song was released by

JYP Entertainment JYP Entertainment Corporation () is a South Korean multinational entertainment and record label conglomerate founded in 1997 by J. Y. Park. It is one of the largest entertainment companies in South Korea, and operates as a record label, tale ...

on February 20, 2017, as the album's lead single. It was written by Shim Eun-jee, Lee Woo-min "Collapsedone", and

Mayu Wakisaka is a singer-songwriter, composer, and lyricist based in Tokyo, Japan. Mayu grew up in Osaka, Japan, and studied law at Kyoto University. In 2007, she quit law school to pursue her career as a singer-songwriter and moved to Los Angeles. While st ...

Background and release

On January 18, 2017, it was reported that Twice would be releasing a special album after their concert in Seoul. In early February, Twice officially announced the release of the reissue of '' Twicecoaster: Lane 1'', titled ''Twicecoaster: Lane 2'', on February 20 with a newly recorded track titled "Knock Knock". Two music video teasers for "Knock Knock" were released on February 17 and 18 at midnight. The first teaser started with the sound of knock which was heard on the ending of the music video for " TT", while the second teaser showed the members dressed in a variety of outfits that flash by in the stop-motion video. The final group image teaser was released on February 19 at midnight. Twice also greeted the fans via Naver V Live for a comeback countdown at 23:30 KST. The music video for "Knock Knock" was officially released the next day in conjunction with the release of the album. It was also released for digital download on various music sites.

Music video

The music video for "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

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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. It was the most viewed K-pop music video for the first half of 2017, and topped YouTube's Most Popular Music Video in Korea of that year. It also ranked at No. 10 on 2017 YouTube's Top Trend Music Video in Japan. The music video featured Twice having fun in a slumber party and snowball fight. Producer

Park Jin-young Park Jin-young (Hangul: 박진영; born December 13, 1971), also known by his stage names J. Y. Park and The Asiansoul or the initials JYP, is a South Korean singer-songwriter, record producer, record executive, and reality television show ju ...

, founder of JYP Entertainment, also had a short appearance. The last scene was the same ending as the music video of " TT".

Reception

"Knock Knock" was a commercial success in South Korea. It debuted atop the Gaon Digital Chart for the week ending February 25, 2017, accumulating 319,957 downloads and 7,136,193 streams within its first week of release. The following week, the song dropped to number two on the Gaon Digital Chart, selling 141,204 downloads and gaining 6,965,178 streams. The single additionally peaked at numbers 5 and 15 on the

World Digital Song Sales The World Digital Song Sales chart (formerly World Digital Songs) is a weekly record chart compiled by Nielsen SoundScan and published by ''Billboard'' magazine. Established in 2010—with the issue dated January 23—as one of 21 genre-specific so ...

and Japan Hot 100, respectively. The song ranked at number 16 on ''

Dazed ''Dazed'' (''Dazed & Confused'' until February 2014) is a bi-monthly British style magazine founded in 1991. It covers music, fashion, film, art, and literature. Dazed is published by Dazed Media, an independent media group known for producing ...

s 20 Best K-pop Songs of 2017. "Knock Knock" surpassed 100 million streams in November 2017 and 2,500,000 downloads in September 2019 on Gaon Music Chart. The song also appears in the movie ''

Spies in Disguise ''Spies in Disguise'' is a 2019 American computer-animated spy comedy film produced by Blue Sky Studios and distributed by 20th Century Fox. Loosely inspired by the 2009 animated short ''Pigeon: Impossible'' by Lucas Martell, the film is direc ...

''.

Promotion

On February 20, 2017, Twice had a live broadcast on Naver V Live at 20:00 KST to celebrate their comeback with fans. The group talked about the album, the title track "Knock Knock" and its music video, as well as their first solo concert which was held on February 17–19 and Asian tour. They also performed the full choreography of "Knock Knock" for the first time. The next day, Twice recorded their appearance on the February 25 episode of ''

You Hee-yeol's Sketchbook ''You Hee-yeol's Sketchbook'' () is a South Korean talk show and live music television program airing from April 24 2009 until July 22nd 2022. It was hosted by You Hee-yeol, also known as his one-man band, Toy. The program has aired since April ...

'', their first variety show for ''Twicecoaster: Lane 2''. The group's appearance was included in the show's special monthly episodes with the concept "Songs I want to sing for those in their 20s." On February 23, Twice held their first comeback stage on '' M Countdown''. It was then followed by performances on February 24 to 26 on ''

Music Bank Music Bank may refer to: * ''Music Bank'' (TV program), a South Korean music program by KBS **''Music Bank World Tour The ''Music Bank'' World Tour is a worldwide live concert tour of South Korean music show '' Music Bank'' by the Korean Broa ...

'', '' Show! Music Core'' and '' Inkigayo'' respectively; continued on the March 7 episode of '' The Show'', and '' Show Champion'' on the 8th. The group ended their music show promotions on March 12 on ''Inkigayo''.

Japanese version

On February 24, 2017, Twice officially announced that their debut in Japan was set for June 28. They released a compilation album titled '' #Twice'' which consists of ten songs including both Korean and Japanese-language versions of "Knock Knock". The Japanese lyrics were written by the same lyricists of the original version.

Accolades

Music program awards

Charts

Weekly charts

Year-end charts

References

{{authority control 2017 singles 2017 songs Korean-language songs JYP Entertainment singles Bubblegum pop songs Gaon Digital Chart number-one singles Twice (group) songs