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.
Kim Ryeowook Kim Ryeo-wook (born June 21, 1987), better known by the mononym Ryeowook, is a South Korean singer and actor. He is a member of the South Korean boy band Super Junior and its subgroups, Super Junior-K.R.Y. and Super Junior-M. Along with four other Super Junior members, he is one of the first Korean artists to appear on Chinese postage stamps. He made his solo debut and released first solo album "The Little Prince" in 2016. He released his duet Cosmic with Bada in 23 September 2016 before he went for enlistment in 11 October 2016 .