Question: When did Flatline by the One Less Lonely Girl singer come out?

full_context: Document 1: Change Me (Justin Bieber song): "Change Me" is a song by Canadian recording artist Justin Bieber from his second compilation album "Journals" (2013) discussing his life after the world turned on him was released on December 2, 2013. The song is the ninth in Bieber's series Music Mondays, the first eight being "Heartbreaker" (October 7, 2013), "All That Matters" (October 14), "Hold Tight" (October 21), "Recovery" (October 28), "Bad Day" (November 4), "All Bad" (November 11), "PYD" (November 18) and "Roller Coaster" (November 25). Bieber released a new single every week for 10 weeks from October 7 to December 9, 2013.
Document 2: My Worlds Acoustic: My Worlds Acoustic is the first remix album by Canadian recording artist Justin Bieber. It was released on November 26, 2010 and was initially sold exclusively at Walmart retail stores and Sam's Club. The album features nine acoustic versions of songs from his debut extended play, "My World" (2009), and first album "My World 2.0" (2010), as well as a new song "Pray". The new versions of the songs were produced by Bieber's music director, Dan Kanter, his vocal producer Kuk Harrell, and also producer Rob Wells. Internationally, the set is included as a part of the compilation album, "" (2010), which included songs from the previous two releases. "My Worlds Acoustic" was released to iTunes, on February 8, 2011.
Document 3: U Smile: "U Smile" is a song performed by Canadian recording artist Justin Bieber. It was written by Jerry Duplessis, Arden Altino, and Dan August Rigo, and produced by Duplessis and Altino. According to Bieber, the song is dedicated to his special fans. The song was released as the second digital-only single from the latter half of Bieber's debut album on March 16, 2010. It was released to mainstream radio in Canada on August 9, 2010, followed by a mainstream and rhythmic release on August 24, 2010, in the United States as the album's third single there.
Document 4: Somebody to Love (Justin Bieber song): "Somebody to Love" is a song performed by Canadian recording artist Justin Bieber. The song served as the second single from his album, "My World 2.0". It was written by Heather Bright and The Stereotypes, and produced by the latter. The song was originally recorded as a demo by Bieber's mentor, R&B singer, Usher, for his sixth studio album, "Raymond v. Raymond" (2010). After things went stale with Usher's label, The Stereotypes were encouraged to give the song to Bieber, who recorded it, with Usher performing background vocals. The song is an upbeat pop song, which also derives from R&B genre, while making use of Eurodisco influences. It impacted US mainstream and rhythmic radio on April 20, 2010. The remix of the song featuring Usher was featured on Bieber's first compilation album "" and his second remix album "".
Document 5: Justin Bieber: Justin Drew Bieber (/ ˈbiːbər /; born March 1, 1994) is a Canadian singer and songwriter. After a talent manager discovered him through his YouTube videos covering songs in 2008 and signed to RBMG, Bieber released his debut EP, My World, in late 2009. It was certified Platinum in the U.S. He became the first artist to have seven songs from a debut record chart on the Billboard Hot 100. Bieber released his first full - length studio album, My World 2.0, in 2010. It debuted at or near number one in several countries, was certified triple Platinum in the U.S., and contained his single ``Baby ''.
Document 6: Bad Day (Justin Bieber song): "Bad Day" is a song by Canadian singer Justin Bieber, which appears on his second compilation album "Journals" (2013). It was released on November 4, 2013, The song is the fifth in Bieber's series Music Mondays, the first four being "Heartbreaker" (October 7), "All That Matters" (October 14), "Hold Tight" (October 21), and "Recovery" (October 28). Bieber released a new single every week for 10 weeks from October 7 to December 9, 2013.
Document 7: Heartbreaker (Justin Bieber song): "Heartbreaker" is a song by Canadian singer Justin Bieber, taken from his second compilation album "Journals" (2013). It was released on October 7, 2013, and produced by T-Minus, Maejor Ali, Justin Bieber, and Chef Tone. The song is the first in Bieber's series Music Mondays, where he released a new single every week for 10 weeks until December 9, 2013.
Document 8: One Less Lonely Girl: "One Less Lonely Girl" is a song by Canadian recording artist Justin Bieber. The song was written and produced by Bieber's mentor, Usher, as well as Ezekiel Lewis, Balewa Muhammad of The Clutch, and A-Rex duo Sean Hamilton and Hyuk Shin. It was released exclusively to iTunes as the second single from his debut release, "My World" on October 6, 2009, and was later released to more digital distributions and mainstream and rhythmic radio soon after.
Document 9: Justin Bieber: On August 17, 2017, Bieber released the single ``Friends ''with American record producer and songwriter BloodPop. Songwriters Julia Michaels and Justin Tranter reunited with Bieber to construct the song, just as they helped create his single`` Sorry'' in 2015 on his studio album Purpose. Bieber did not attend the 2018 Grammy Awards Show to perform the nominated song ``Despacito '', claiming that he would not make any award show appearances until his next album was finished.
Document 10: Favorite Girl: "Favorite Girl" is a song by Canadian recording artist, Justin Bieber. The song was written and produced by D'Mile, and Antea Birchett, Anesha Birchett, and Delisha Thomas also receive writing credits. Bieber debuted the acoustic version of his song in his official YouTube account after American country pop singer Taylor Swift used Bieber's single "One Time" as background music in one of her video tour diaries. The song was later released exclusively to iTunes as the second promotional single from his debut studio release, "My World" on November 4, 2009.
Document 11: Bon Iver discography: ``Brackett, WI ''released on Dark Was the Night (February 17, 2009 -- 3 x LP & 2 x CD).`` For Emma'' (live) released on Live at the World Cafe Vol. 27 (2009 -- U.S. CD) ``Skinny Love ''(live) released on`` Later... Live with Jools Holland'' (October 12, 2009 -- 2 x CD) ``Roslyn ''(with St. Vincent) released on The Twilight Saga: New Moon: Original Motion Picture Soundtrack (October 19, 2009 -- CD. December 2009 -- 2 x LP)`` Flume'', ``Wisconsin ''and`` Soft Light'' featured on the feature film The Builder by R. Alverson (July 27, 2010 -- DVD) My Beautiful Dark Twisted Fantasy by Kanye West (November 22, 2010 -- CD); featuring Bon Iver on six total tracks including ``Monster ''and`` Lost in the World''. Writing credits for Justin Vernon and featuring Bon Iver on ``Monster ''and`` Lost in The World''. ``The Wolves (Act I & II) ''featured on the feature film Rust and Bone (October 29, 2012 - Film)`` The Wolves (Act I & II)'' featured on the feature film The Place Beyond the Pines (March 29, 2013 - Film) ``Come Talk To Me ''featured on`` I'll Scratch Yours'' by Peter Gabriel (September 24, 2013) ``Heavenly Father ''released on the Wish I Was Here soundtrack (June 20, 2014 - CD / Digital)`` re: stacks'' featured in the feature film As Cool As I Am. ``I Need a Forest Fire ''features Bon Iver on James Blake's third studio album The Colour in Anything.
Document 12: All Bad: "All Bad" is a single by Canadian recording artist Justin Bieber. It was released on November 11, 2013, The song is the sixth in Bieber's series Music Mondays, the first five being "Heartbreaker" (October 7, 2013), "All That Matters" (October 14), "Hold Tight" (October 21), "Recovery" (October 28) and "Bad Day" (November 4). Bieber released a new single every week for 10 weeks from October 7 to December 9, 2013.
Document 13: Justin Bieber: Justin Drew Bieber (/ ˈbiːbər /; born March 1, 1994) is a Canadian singer, actor and songwriter. After a talent manager discovered him through his YouTube videos covering songs in 2008 and he signed to RBMG, Bieber released his debut EP, My World, in late 2009. It was certified platinum in the U.S. He became the first artist to have seven songs from a debut record chart on the Billboard Hot 100. Bieber released his first full - length studio album, My World 2.0, in 2010. It debuted at or near number one in several countries, was certified triple platinum in the U.S., and contained his single ``Baby ''.
Document 14: Journals (album): On December 9, 2013, Bieber announced that the ten Music Monday releases would be packaged with an additional five new songs in a compilation entitled Complete My Journals. Although the album was initially set for release on December 16, 2013, the date was pushed back one week to December 23, as Bieber intended to include one more song on the compilation. Though it does not appear on the album itself, the bonus track, ``Flatline '', was available for a free download on the iTunes Store for a limited time. Journals was available on iTunes from January 2, 2014, and all sixteen songs are available for purchase individually. According to one of its producers and Bieber's personal friend, Jason`` Poo Bear'' Boyd, the album was supposed to receive a full release, as well as its singles to be promoted on radio, however the label did n't support it because it was n't the direction they wanted Justin to go. It was, however, eventually released on LP in 2016.
Document 15: Down to Earth (Justin Bieber song): "Down to Earth" is a song by Canadian recording artist Justin Bieber, included as a track on his debut release, "My World", released on November 17, 2009. It was written by Bieber, who was assisted by Carlos and Steven Battey of The Jackie Boyz, as well as the song's producers, Mason "MdL" Levy, and Kevin Risto and Waynne Nugent of Midi Mafia. "Down to Earth" is a teen pop song, with lyrics that were inspired by the divorce of Bieber's parents. It also contains lyrical content about growing up. The song received positive reviews from critics, who embraced the song as a shift in the puppy love content of the album. After the release of My World, due to digital sales, the song charted in the lower regions of charts in the United States, Canada, and the United Kingdom.
ground_truth: January 2, 2014
sub_queries: One Less Lonely Girl >> performer Answer: Justin Bieber
when did flatline by Justin Bieber come out Answer: January 2, 2014