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.
Heo Sol-ji Heo Sol-ji (born January 10, 1989), better known by the mononym Solji, is a South Korean singer. She debuted in 2006 in a ballad duo group called 2NB. She worked as a vocal trainer before she became a member of EXID.