"U-Go-Girl" is a song by South Korean recording artist Lee Hyori, featuring rapper Nassun.
It was first made available to digital outlets in South Korea a three days prior to the release of her third studio album, It's Hyorish, on July 12, 2008.
A dance-pop number with hip hop influences, "U-Go-Girl" was written and produced by songwriting duo E-Tribe, who would later compose Girls' Generation's "Gee" (2009) and Miss A's "Hush" (2013).
[2] Mnet Media initially planned to pre-release five of the upcoming album's songs, including "U-Go-Girl" and "Hey, Mr. Big", on July 14.
After several of the album's songs were illegally leaked to YouTube, however, Mnet Media pushed up the release of "U-Go-Girl" to July 12, 2008.