| Signal | ||||
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| EP by | ||||
| Released | May 15, 2017 | |||
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| Genre | ||||
| Length | 19:45 | |||
| Language | Korean | |||
| Label | JYP | |||
| Producer | J.Y. Park "The Asiansoul" | |||
| Twice chronology | ||||
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| Singles from Signal | ||||
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Signal is the fourth extended play (EP) by South Korean girl group Twice. The EP was released on May 15, 2017, by JYP Entertainment and distributed by Genie Music.
Featuring six tracks incorporating various genres such as pop dance, hip hop, moombahton, and jazz, the EP is supported by the lead single of the same name produced by Park Jin-young, which features the use of a programmed Roland TR-808-style kick and hi-hat. This marks the first time that Twice and Park had collaborated with one another for a song. Several notable producers and songwriters participated in the production of the album, including Twice's members Jihyo and Chaeyoung who wrote the lyrics for the fifth track "Eye Eye Eyes", while the third track "Only You" has lyrics written by former Wonder Girls member Ha:tfelt.
The EP became a commercial success for the group, reaching over 280,000 copies sold by the end of 2017. With its release, Twice reached an accumulated number of over 1 million albums sold since their debut.