| "U" | ||||
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&sq=&lang=&file=File:Suju_u_cover.jpg) Korean single cover | ||||
| Single by Super Junior | ||||
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| Released | May 25, 2006 | |||
| Recorded | 2006 | |||
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| Length | 3:45 | |||
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| Super Junior singles chronology | ||||
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| Alternative cover | ||||
&sq=&lang=&file=File:U_Taiwan_Suju.jpg) Taiwanese special edition cover | ||||
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"U" is a song recorded in multiple languages by South Korean boy group Super Junior, with the original Korean version released through SM Entertainment on May 25, 2006. A CD single was released in South Korea on June 7 and peaked at number one on the monthly MIAK album chart in June 2006, selling copies over 83,000 by July 2007. The song won five first place awards on South Korean music programs.
"U" received additional releases in Mandarin and Japanese; the Mandarin version of "U" was released as a special Taiwan edition EP through Avex Taiwan on October 4, 2006. In Japan, it was released as a double A-side single titled "U" / "Twins" through Rhythm Zone on July 9, 2008, with the Japanese version of "U" included in the limited edition release. The single peaked at number four on the Oricon Singles Chart and sold over 21,000 copies in Japan.
Super Junior's Mandopop subgroup Super Junior-M released a cover of "U" on April 8, 2008. It served as the subgroup's debut single and marked the second version recorded in Mandarin and third remake of "U". The lyrics were altered from the previous versions with the addition of new jazz swing style instrumentations.