Chat-Shire
| Chat-Shire | ||||
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| EP by | ||||
| Released | October 23, 2015 | |||
| Length | 25:40 (digital) 31:56 (CD)  | |||
| Language | Korean | |||
| Label | ||||
| Producer | 
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| IU chronology | ||||
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| Singles from Chat-Shire | ||||
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| Music video | ||||
| "Twenty-Three" on YouTube | ||||
Chat-Shire (stylized as CHAT-SHIRE) is the fifth Korean-language extended play by South Korean singer-songwriter IU. The self-composed EP was released digitally on October 23, 2015, and physically four days later by LOEN Entertainment under its imprint LOEN Tree. It was her first original material release since Modern Times (2013).
Chat-Shire contains seven tracks in total including the lead single "Twenty-Three". It also features two CD-only bonus tracks ("Heart" and "Twenty Three") from KBS's television series The Producers, in which IU starred as Cindy.