The song "Gashina" was recorded by a South Korea singer that was a member of what group in 2007?
Sunmi Lee Sun-mi (born May 2, 1992), referred to as Sunmi, is a South Korean singer. She debuted in 2007 as a member of South Korean girl group Wonder Girls and left from the group in January 2010 to pursue her academic career.
U (Super Junior song) "U" is a song by South Korean pop group Super Junior, and is the group's follow-up release to their debut album "Twins". The single topped CD sales charts during the first several weeks after its release on June 7, 2006. "U" peaked at #1 on the monthly MIAK K-pop album charts and sold 91,416 copies by 2008. The song won a total of five music recognitions, being Super Junior's most successful single in the music charts until the release of "Sorry, Sorry" in March 2009. Promotional performances for the title song, "U", did not complete until September 2006. The last general performance for the song was in August 2007 in Tokyo, Japan.