Question: When was the film starring a South Korean singer-songwriter, actor and music producer born in June 1982 released?

Context paragraphs:
Keith Varon: Keith Varon is an American singer-songwriter, guitarist, and music producer born in San Francisco, California.  An independent soft rock musician, several of his songs have been selected to appear on different TV shows, such as MTV's "" and its spin-off "The Hills" as well as "Next", ABC's "What About Brian" and "Paradise City" on E!.

Lovey (singer): Kim Hye-soo (Korean: 김혜수) (born June 27, 1993), better known as Lovey (Korean: 러비), is a South Korean singer-songwriter.  She debuted in 2013, and has been signed under Starship Entertainment since 2016.  She has an elder brother who is also a singer-songwriter, Brother Su.

Yong Jun-hyung: Yong Jun-hyung (born December 19, 1989), commonly known as Junhyung and also known as Poppin' Dragon and Joker, is a South Korean singer-songwriter, rapper, record producer, and actor.  He is a member of South Korean boy group Highlight.

Jay Hong: Jay Hong (born June 19, 1986) is a South Korean singer-songwriter and producer.  He debuted as a member of duo named Blue Marble in 2011, and he released his first solo single "Without You" in 2012.  "Without You" was included in the South Korean film "Don't Cry Mommy".  He performed mandatory military service from 2014 to 2015.  He produced Taiwanese idol group JPM's 2nd album 365 and became famous for producing "HEART" and "Love Departure" (爱出发) for Chinese idol group TFBoys' debut album.

Park Yoo-chun: Park Yoo-chun (born June 4, 1986), formerly known as Micky Yoochun and better known by the mononym Yoochun, is a South Korean singer-songwriter and actor.  He is a member of the South Korean boy group JYJ and former member of TVXQ.  He has starred in dramas "Sungkyunkwan Scandal" (2010), "Miss Ripley" (2011), "Rooftop Prince" (2012), "Missing You" (2012), "Three Days" (2014) and "The Girl Who Sees Smells" (2015).

Niel (singer): Ahn Daniel (born August 16, 1994), better known by his stage name Niel, is a South Korean singer-songwriter and actor.  He is best known as a member of the South Korean boy group Teen Top.  Niel released his first EP titled oNiely on February 16, 2015.

R2B: Return to Base: R2B: Return to Base () is a 2012 South Korean aviation action drama film loosely based on the critically acclaimed 1986 film Top Gun.  The film stars Rain, Shin Se-kyung and Yoo Jun-sang in lead roles.  It was directed by Kim Dong-won and is a remake of Shin Sang-ok's 1964 film "Red Scarf".  It is about a talented, yet troublemaking, elite air force pilot who is demoted to a combat flying unit.  It was released on 15 August 2012.  Republic of Korea Air Force was heavily involved to support filming.

Lee Hong-gi: Lee Hong-gi (; ] ; Japanese:イ•ホンギ) is a South Korean singer-songwriter, actor, writer, and fashion designer.  He is best known for his singing abilities and being the main singer of the South Korean rock band F.T. Island.  Lee released his first solo extended play "FM302" in South Korea on 18 November 2015 and his Japanese album "AM302" on 9 December 2015.

Rain (entertainer): Jung Ji-hoon (, born June 25, 1982), better known by his stage name Rain (Korean 비 IPA ['piː]), is a South Korean singer-songwriter, actor, and music producer.

Jordy Birch: Jordy Birch is a Canadian singer-songwriter and music producer born in Vancouver, British Columbia.  Birch first began releasing his music with the rock band Pure, formed in Vancouver in 1991.  Pure was discovered at Vancouver's Music West Conference in 1991, when they went there to showcase their demo, impressing amongst others, an executive from Restless Records.  They were subsequently signed by Warner/Reprise and the band's song "Greedy" was used in the Ralph Bakshi animated movie "Cool World".

Supporting paragraphs: R2B: Return to Base Rain (entertainer)
Answer: 15 August 2012