GP Basic (Korean: 지피 베이직 ) was a South Korean girl group who debuted on August 15, 2010.
 At the time of their debut, they were considered to be the "youngest" South Korean girl group with an average age of below 13.5.
 The age of their youngest member, Janey, caused controversy followed by the debut of a much younger girl group, G-story, who were all below 10 years old.
 This led to new broadcasting regulations in South Korea.
Shingo Katori (香取 慎吾 , Katori Shingo , born 31 January 1977) is a Japanese actor, singer, television host, radio personality, and the youngest member of SMAP, the best-selling boy band in Asia.
Lee Seung-hyun (Hangul: 이승현; born December 12, 1990), better known by his stage name Seungri (Hangul: 승리, "Victory") and V.I when performing in Japan, is a South Korean singer, songwriter, record producer, actor, and entrepreneur.
 In the mid-2000s, Seungri rose to prominence as one of three vocalists and youngest member of the South Korean boy band Big Bang under YG Entertainment, which eventually became one of the best-selling digital group of all-time in Asia and one of the best-selling boy bands in the world.
 With the release of the group's second studio album "Remember" (2008), in which the second single released, "Strong Baby", was performed solely by Seungri, he began to adopt a more mature image as an artist.
Kim Ki-bum (born August 21, 1987) is a South Korean actor and singer.
 He was a member of the South Korean boy band Super Junior.
 After the release of Super Junior's third studio album "Sorry, Sorry" in 2009, Kim announced his leave from the group to pursue his acting career.
 In 2015, Kim announced he ended his contract with S.M. Entertainment and departure from the group.
 Kim made his television debut in the Korean television drama, "April Kiss", in 2004.
Joseph Mulrey McIntyre (born December 31, 1972), known professionally as Joey or Joe McIntyre, is an American singer-songwriter and actor.
 He is best known as the youngest member of the boy band New Kids on the Block.
 He has sold over 1 million records worldwide as a solo artist.
Kim Su-ji (born 16 February 1998) is a South Korean diver.
 She competed in the 10 metre platform event at the 2012 Summer Olympics.
 The youngest member of the South Korean contingent at the Olympics that year, she lives in Ulsan, where she graduated from Guyeong Primary School and went on to Cheonsang Middle School.
 She won a bronze medal along with Cho Eun-Bi in the women's 10 metre synchronised platform event at the 2013 East Asian Games in Tianjin.
19-Nineteen (; lit.
 "I'm 19 years old") is a 2009 South Korean-Japanese film starring T.O.P, Seungri and Huh E-jae.
 Three nineteen-year-olds, two boys and a girl, are accused of murder and forced to run away.
 Everyone, including their parents, believes they are guilty, but the experience strengthens their bond as they attempt to find the real killer and prove their innocence.
Woo Ji-seok (Korean: 우지석 ; born May 11, 1990), commonly known as Taewoon or ₩uNo is a South Korean singer, rapper, songwriter, and record producer.
 He is a former member of the South Korean boy band Speed and former member of the South Korean Coed group Coed School.
Dong Young-bae (; born 18 May 1988), better known by his stage name Taeyang (meaning "sun" in Korean) and SOL (when performing in Japan), is a South Korean singer, songwriter and dancer.
 After appearing in Jinusean's music video "A-yo," Taeyang began training under YG Entertainment at the age of 12.
 Six years later, he made his debut in 2006 as a member of the South Korean boy band Big Bang.
 While the quintet's debut was met with lukewarm receptions, their follow-ups cemented their popularity, becoming one of the best-selling digital group of all-time in Asia and one of the best-selling boy bands in the world.
Kidoh (키도) (born 16 December 1992 in Seoul) is a South Korean singer, rapper, composer, producer and songwriter.
 He was a member of the South Korean boy band Topp Dogg, and the first Topp Dogg band member to release a solo album.
 He has been active member of South Korean hiphop crews called Rockbottom and Daenamhyup for several years.

Question: 19-Nineteen is a 2009 film starring a South Korean acorand singer who was the youngest member of what boy band?
Answer: Big Bang