| "Knock Knock" | ||||
|---|---|---|---|---|
| Single by Twice | ||||
| from the EP Twicecoaster: Lane 2 | ||||
| Language | Korean | |||
| Released | February 20, 2017 | |||
| Genre | ||||
| Length | 3:15 | |||
| Label | JYP | |||
| Composer(s) |
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| Lyricist(s) |
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| Twice singles chronology | ||||
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| Music video | ||||
| "Knock Knock" on YouTube | ||||
"Knock Knock" (stylized in all caps) is a song recorded by South Korea girl group TWICE for their special album Twicecoaster: Lane 2 (2017). The song was released by JYP Entertainment on February 20, 2017, as the album's lead single. It was written by Shim Eun-jee, Lee Woo-min "Collapsedone", and Mayu Wakisaka.